Mercurial > repos > dawe > srf2fastq
annotate srf2fastq/io_lib-1.12.2/io_lib/jenkins_lookup3.c @ 0:d901c9f41a6a default tip
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
author | dawe |
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date | Tue, 07 Jun 2011 17:48:05 -0400 |
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1 /* |
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2 ------------------------------------------------------------------------------- |
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3 lookup3.c, by Bob Jenkins, May 2006, Public Domain. |
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4 |
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5 These are functions for producing 32-bit hashes for hash table lookup. |
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6 hashword(), hashlittle(), hashlittle2(), hashbig(), mix(), and final() |
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7 are externally useful functions. Routines to test the hash are included |
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8 if SELF_TEST is defined. You can use this free for any purpose. It's in |
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9 the public domain. It has no warranty. |
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10 |
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11 You probably want to use hashlittle(). hashlittle() and hashbig() |
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12 hash byte arrays. hashlittle() is is faster than hashbig() on |
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13 little-endian machines. Intel and AMD are little-endian machines. |
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14 On second thought, you probably want hashlittle2(), which is identical to |
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15 hashlittle() except it returns two 32-bit hashes for the price of one. |
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16 You could implement hashbig2() if you wanted but I haven't bothered here. |
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17 |
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18 If you want to find a hash of, say, exactly 7 integers, do |
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19 a = i1; b = i2; c = i3; |
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20 mix(a,b,c); |
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21 a += i4; b += i5; c += i6; |
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22 mix(a,b,c); |
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23 a += i7; |
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24 final(a,b,c); |
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25 then use c as the hash value. If you have a variable length array of |
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26 4-byte integers to hash, use hashword(). If you have a byte array (like |
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27 a character string), use hashlittle(). If you have several byte arrays, or |
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28 a mix of things, see the comments above hashlittle(). |
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29 |
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30 Why is this so big? I read 12 bytes at a time into 3 4-byte integers, |
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31 then mix those integers. This is fast (you can do a lot more thorough |
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32 mixing with 12*3 instructions on 3 integers than you can with 3 instructions |
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33 on 1 byte), but shoehorning those bytes into integers efficiently is messy. |
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34 ------------------------------------------------------------------------------- |
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35 */ |
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36 /* #define SELF_TEST 1 */ |
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37 |
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38 #include <stdio.h> /* defines printf for tests */ |
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39 #include <time.h> /* defines time_t for timings in the test */ |
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40 #include <inttypes.h> /* defines uint32_t etc */ |
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41 #include <sys/param.h> /* attempt to define endianness */ |
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42 #ifdef linux |
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43 # include <endian.h> /* attempt to define endianness */ |
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44 #endif |
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45 |
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46 #include "io_lib/jenkins_lookup3.h" |
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47 |
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48 /* |
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49 * My best guess at if you are big-endian or little-endian. This may |
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50 * need adjustment. |
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51 */ |
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52 #if (defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && \ |
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53 __BYTE_ORDER == __LITTLE_ENDIAN) || \ |
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54 (defined(i386) || defined(__i386__) || defined(__i486__) || \ |
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55 defined(__i586__) || defined(__i686__) || defined(vax) || defined(MIPSEL)) |
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56 # define HASH_LITTLE_ENDIAN 1 |
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57 # define HASH_BIG_ENDIAN 0 |
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58 #elif (defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && \ |
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59 __BYTE_ORDER == __BIG_ENDIAN) || \ |
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60 (defined(sparc) || defined(POWERPC) || defined(mc68000) || defined(sel)) |
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61 # define HASH_LITTLE_ENDIAN 0 |
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62 # define HASH_BIG_ENDIAN 1 |
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63 #else |
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64 # define HASH_LITTLE_ENDIAN 0 |
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65 # define HASH_BIG_ENDIAN 0 |
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66 #endif |
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67 |
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68 #define hashsize(n) ((uint32_t)1<<(n)) |
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69 #define hashmask(n) (hashsize(n)-1) |
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70 #define rot(x,k) (((x)<<(k)) | ((x)>>(32-(k)))) |
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71 |
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72 /* |
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73 ------------------------------------------------------------------------------- |
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74 mix -- mix 3 32-bit values reversibly. |
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75 |
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76 This is reversible, so any information in (a,b,c) before mix() is |
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77 still in (a,b,c) after mix(). |
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78 |
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79 If four pairs of (a,b,c) inputs are run through mix(), or through |
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80 mix() in reverse, there are at least 32 bits of the output that |
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81 are sometimes the same for one pair and different for another pair. |
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82 This was tested for: |
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83 * pairs that differed by one bit, by two bits, in any combination |
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84 of top bits of (a,b,c), or in any combination of bottom bits of |
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85 (a,b,c). |
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86 * "differ" is defined as +, -, ^, or ~^. For + and -, I transformed |
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87 the output delta to a Gray code (a^(a>>1)) so a string of 1's (as |
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88 is commonly produced by subtraction) look like a single 1-bit |
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89 difference. |
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90 * the base values were pseudorandom, all zero but one bit set, or |
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91 all zero plus a counter that starts at zero. |
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92 |
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93 Some k values for my "a-=c; a^=rot(c,k); c+=b;" arrangement that |
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94 satisfy this are |
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95 4 6 8 16 19 4 |
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96 9 15 3 18 27 15 |
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97 14 9 3 7 17 3 |
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98 Well, "9 15 3 18 27 15" didn't quite get 32 bits diffing |
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99 for "differ" defined as + with a one-bit base and a two-bit delta. I |
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100 used http://burtleburtle.net/bob/hash/avalanche.html to choose |
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101 the operations, constants, and arrangements of the variables. |
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102 |
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103 This does not achieve avalanche. There are input bits of (a,b,c) |
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104 that fail to affect some output bits of (a,b,c), especially of a. The |
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105 most thoroughly mixed value is c, but it doesn't really even achieve |
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106 avalanche in c. |
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107 |
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108 This allows some parallelism. Read-after-writes are good at doubling |
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109 the number of bits affected, so the goal of mixing pulls in the opposite |
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110 direction as the goal of parallelism. I did what I could. Rotates |
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111 seem to cost as much as shifts on every machine I could lay my hands |
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112 on, and rotates are much kinder to the top and bottom bits, so I used |
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113 rotates. |
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114 ------------------------------------------------------------------------------- |
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115 */ |
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116 #define mix(a,b,c) \ |
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117 { \ |
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118 a -= c; a ^= rot(c, 4); c += b; \ |
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119 b -= a; b ^= rot(a, 6); a += c; \ |
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120 c -= b; c ^= rot(b, 8); b += a; \ |
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121 a -= c; a ^= rot(c,16); c += b; \ |
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122 b -= a; b ^= rot(a,19); a += c; \ |
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123 c -= b; c ^= rot(b, 4); b += a; \ |
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124 } |
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125 |
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126 /* |
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127 ------------------------------------------------------------------------------- |
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128 final -- final mixing of 3 32-bit values (a,b,c) into c |
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129 |
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130 Pairs of (a,b,c) values differing in only a few bits will usually |
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131 produce values of c that look totally different. This was tested for |
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132 * pairs that differed by one bit, by two bits, in any combination |
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133 of top bits of (a,b,c), or in any combination of bottom bits of |
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134 (a,b,c). |
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135 * "differ" is defined as +, -, ^, or ~^. For + and -, I transformed |
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136 the output delta to a Gray code (a^(a>>1)) so a string of 1's (as |
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137 is commonly produced by subtraction) look like a single 1-bit |
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138 difference. |
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139 * the base values were pseudorandom, all zero but one bit set, or |
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140 all zero plus a counter that starts at zero. |
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141 |
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142 These constants passed: |
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143 14 11 25 16 4 14 24 |
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144 12 14 25 16 4 14 24 |
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145 and these came close: |
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146 4 8 15 26 3 22 24 |
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147 10 8 15 26 3 22 24 |
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148 11 8 15 26 3 22 24 |
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149 ------------------------------------------------------------------------------- |
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150 */ |
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151 #define final(a,b,c) \ |
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152 { \ |
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153 c ^= b; c -= rot(b,14); \ |
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154 a ^= c; a -= rot(c,11); \ |
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155 b ^= a; b -= rot(a,25); \ |
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156 c ^= b; c -= rot(b,16); \ |
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157 a ^= c; a -= rot(c,4); \ |
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158 b ^= a; b -= rot(a,14); \ |
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159 c ^= b; c -= rot(b,24); \ |
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160 } |
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161 |
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162 /* |
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163 -------------------------------------------------------------------- |
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164 This works on all machines. To be useful, it requires |
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165 -- that the key be an array of uint32_t's, and |
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166 -- that the length be the number of uint32_t's in the key |
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167 |
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168 The function hashword() is identical to hashlittle() on little-endian |
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169 machines, and identical to hashbig() on big-endian machines, |
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170 except that the length has to be measured in uint32_ts rather than in |
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171 bytes. hashlittle() is more complicated than hashword() only because |
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172 hashlittle() has to dance around fitting the key bytes into registers. |
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173 -------------------------------------------------------------------- |
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174 */ |
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175 static uint32_t hashword( |
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176 const uint32_t *k, /* the key, an array of uint32_t values */ |
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177 size_t length, /* the length of the key, in uint32_ts */ |
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178 uint32_t initval) /* the previous hash, or an arbitrary value */ |
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179 { |
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180 uint32_t a,b,c; |
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181 |
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182 /* Set up the internal state */ |
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183 a = b = c = 0xdeadbeef + (((uint32_t)length)<<2) + initval; |
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184 |
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185 /*------------------------------------------------- handle most of the key */ |
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186 while (length > 3) |
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187 { |
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188 a += k[0]; |
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189 b += k[1]; |
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190 c += k[2]; |
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191 mix(a,b,c); |
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192 length -= 3; |
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193 k += 3; |
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194 } |
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195 |
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196 /*------------------------------------------- handle the last 3 uint32_t's */ |
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197 switch(length) /* all the case statements fall through */ |
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198 { |
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199 case 3 : c+=k[2]; |
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200 case 2 : b+=k[1]; |
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201 case 1 : a+=k[0]; |
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202 final(a,b,c); |
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203 case 0: /* case 0: nothing left to add */ |
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204 break; |
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205 } |
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206 /*------------------------------------------------------ report the result */ |
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207 return c; |
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208 } |
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209 |
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210 |
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211 /* |
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212 -------------------------------------------------------------------- |
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213 hashword2() -- same as hashword(), but take two seeds and return two |
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214 32-bit values. pc and pb must both be nonnull, and *pc and *pb must |
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215 both be initialized with seeds. If you pass in (*pb)==0, the output |
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216 (*pc) will be the same as the return value from hashword(). |
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217 -------------------------------------------------------------------- |
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218 */ |
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219 static void hashword2 ( |
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220 const uint32_t *k, /* the key, an array of uint32_t values */ |
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221 size_t length, /* the length of the key, in uint32_ts */ |
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222 uint32_t *pc, /* IN: seed OUT: primary hash value */ |
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223 uint32_t *pb) /* IN: more seed OUT: secondary hash value */ |
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224 { |
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225 uint32_t a,b,c; |
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226 |
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227 /* Set up the internal state */ |
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228 a = b = c = 0xdeadbeef + ((uint32_t)(length<<2)) + *pc; |
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229 c += *pb; |
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230 |
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231 /*------------------------------------------------- handle most of the key */ |
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232 while (length > 3) |
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233 { |
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234 a += k[0]; |
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235 b += k[1]; |
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236 c += k[2]; |
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237 mix(a,b,c); |
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238 length -= 3; |
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239 k += 3; |
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240 } |
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241 |
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242 /*------------------------------------------- handle the last 3 uint32_t's */ |
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243 switch(length) /* all the case statements fall through */ |
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244 { |
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245 case 3 : c+=k[2]; |
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246 case 2 : b+=k[1]; |
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247 case 1 : a+=k[0]; |
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248 final(a,b,c); |
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249 case 0: /* case 0: nothing left to add */ |
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250 break; |
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251 } |
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252 /*------------------------------------------------------ report the result */ |
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253 *pc=c; *pb=b; |
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254 } |
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255 |
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256 |
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257 /* |
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258 ------------------------------------------------------------------------------- |
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259 hashlittle() -- hash a variable-length key into a 32-bit value |
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260 k : the key (the unaligned variable-length array of bytes) |
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261 length : the length of the key, counting by bytes |
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262 initval : can be any 4-byte value |
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263 Returns a 32-bit value. Every bit of the key affects every bit of |
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264 the return value. Two keys differing by one or two bits will have |
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265 totally different hash values. |
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266 |
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267 The best hash table sizes are powers of 2. There is no need to do |
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268 mod a prime (mod is sooo slow!). If you need less than 32 bits, |
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269 use a bitmask. For example, if you need only 10 bits, do |
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270 h = (h & hashmask(10)); |
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271 In which case, the hash table should have hashsize(10) elements. |
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272 |
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273 If you are hashing n strings (uint8_t **)k, do it like this: |
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274 for (i=0, h=0; i<n; ++i) h = hashlittle( k[i], len[i], h); |
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275 |
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276 By Bob Jenkins, 2006. bob_jenkins@burtleburtle.net. You may use this |
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277 code any way you wish, private, educational, or commercial. It's free. |
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278 |
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279 Use for hash table lookup, or anything where one collision in 2^^32 is |
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280 acceptable. Do NOT use for cryptographic purposes. |
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281 ------------------------------------------------------------------------------- |
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282 */ |
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283 |
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284 static uint32_t hashlittle( const void *key, size_t length, uint32_t initval) |
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285 { |
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286 uint32_t a,b,c; /* internal state */ |
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287 union { const void *ptr; size_t i; } u; /* needed for Mac Powerbook G4 */ |
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288 |
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289 /* Set up the internal state */ |
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290 a = b = c = 0xdeadbeef + ((uint32_t)length) + initval; |
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291 |
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292 u.ptr = key; |
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293 if (HASH_LITTLE_ENDIAN && ((u.i & 0x3) == 0)) { |
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294 const uint32_t *k = (const uint32_t *)key; /* read 32-bit chunks */ |
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295 #ifdef VALGRIND |
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296 const uint8_t *k8; |
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297 #endif |
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298 |
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299 /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */ |
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300 while (length > 12) |
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301 { |
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302 a += k[0]; |
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303 b += k[1]; |
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304 c += k[2]; |
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305 mix(a,b,c); |
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306 length -= 12; |
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307 k += 3; |
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308 } |
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309 |
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310 /*----------------------------- handle the last (probably partial) block */ |
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311 /* |
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312 * "k[2]&0xffffff" actually reads beyond the end of the string, but |
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313 * then masks off the part it's not allowed to read. Because the |
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314 * string is aligned, the masked-off tail is in the same word as the |
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315 * rest of the string. Every machine with memory protection I've seen |
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316 * does it on word boundaries, so is OK with this. But VALGRIND will |
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317 * still catch it and complain. The masking trick does make the hash |
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318 * noticably faster for short strings (like English words). |
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319 */ |
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320 #ifndef VALGRIND |
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321 |
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322 switch(length) |
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323 { |
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324 case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; |
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325 case 11: c+=k[2]&0xffffff; b+=k[1]; a+=k[0]; break; |
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326 case 10: c+=k[2]&0xffff; b+=k[1]; a+=k[0]; break; |
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327 case 9 : c+=k[2]&0xff; b+=k[1]; a+=k[0]; break; |
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328 case 8 : b+=k[1]; a+=k[0]; break; |
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329 case 7 : b+=k[1]&0xffffff; a+=k[0]; break; |
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330 case 6 : b+=k[1]&0xffff; a+=k[0]; break; |
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331 case 5 : b+=k[1]&0xff; a+=k[0]; break; |
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332 case 4 : a+=k[0]; break; |
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333 case 3 : a+=k[0]&0xffffff; break; |
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334 case 2 : a+=k[0]&0xffff; break; |
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335 case 1 : a+=k[0]&0xff; break; |
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336 case 0 : return c; /* zero length strings require no mixing */ |
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337 } |
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338 |
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339 #else /* make valgrind happy */ |
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340 |
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341 k8 = (const uint8_t *)k; |
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342 switch(length) |
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343 { |
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344 case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; |
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345 case 11: c+=((uint32_t)k8[10])<<16; /* fall through */ |
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346 case 10: c+=((uint32_t)k8[9])<<8; /* fall through */ |
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347 case 9 : c+=k8[8]; /* fall through */ |
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348 case 8 : b+=k[1]; a+=k[0]; break; |
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349 case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */ |
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350 case 6 : b+=((uint32_t)k8[5])<<8; /* fall through */ |
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351 case 5 : b+=k8[4]; /* fall through */ |
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352 case 4 : a+=k[0]; break; |
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353 case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */ |
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354 case 2 : a+=((uint32_t)k8[1])<<8; /* fall through */ |
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355 case 1 : a+=k8[0]; break; |
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356 case 0 : return c; |
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357 } |
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358 |
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359 #endif /* !valgrind */ |
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360 |
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361 } else if (HASH_LITTLE_ENDIAN && ((u.i & 0x1) == 0)) { |
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362 const uint16_t *k = (const uint16_t *)key; /* read 16-bit chunks */ |
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363 const uint8_t *k8; |
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364 |
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365 /*--------------- all but last block: aligned reads and different mixing */ |
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366 while (length > 12) |
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367 { |
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368 a += k[0] + (((uint32_t)k[1])<<16); |
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369 b += k[2] + (((uint32_t)k[3])<<16); |
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370 c += k[4] + (((uint32_t)k[5])<<16); |
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371 mix(a,b,c); |
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372 length -= 12; |
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373 k += 6; |
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374 } |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
375 |
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|
376 /*----------------------------- handle the last (probably partial) block */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
377 k8 = (const uint8_t *)k; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
378 switch(length) |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
379 { |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
380 case 12: c+=k[4]+(((uint32_t)k[5])<<16); |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
381 b+=k[2]+(((uint32_t)k[3])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
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|
382 a+=k[0]+(((uint32_t)k[1])<<16); |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
383 break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
384 case 11: c+=((uint32_t)k8[10])<<16; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
385 case 10: c+=k[4]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
386 b+=k[2]+(((uint32_t)k[3])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
387 a+=k[0]+(((uint32_t)k[1])<<16); |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
388 break; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
389 case 9 : c+=k8[8]; /* fall through */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
390 case 8 : b+=k[2]+(((uint32_t)k[3])<<16); |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
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391 a+=k[0]+(((uint32_t)k[1])<<16); |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
392 break; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
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changeset
|
393 case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
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|
394 case 6 : b+=k[2]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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changeset
|
395 a+=k[0]+(((uint32_t)k[1])<<16); |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
396 break; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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397 case 5 : b+=k8[4]; /* fall through */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
398 case 4 : a+=k[0]+(((uint32_t)k[1])<<16); |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
399 break; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
400 case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
401 case 2 : a+=k[0]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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changeset
|
402 break; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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changeset
|
403 case 1 : a+=k8[0]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
404 break; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
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405 case 0 : return c; /* zero length requires no mixing */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
406 } |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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changeset
|
407 |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
408 } else { /* need to read the key one byte at a time */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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409 const uint8_t *k = (const uint8_t *)key; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
410 |
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changeset
|
411 /*--------------- all but the last block: affect some 32 bits of (a,b,c) */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
412 while (length > 12) |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
413 { |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
414 a += k[0]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
415 a += ((uint32_t)k[1])<<8; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
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416 a += ((uint32_t)k[2])<<16; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
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417 a += ((uint32_t)k[3])<<24; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
418 b += k[4]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
419 b += ((uint32_t)k[5])<<8; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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420 b += ((uint32_t)k[6])<<16; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
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421 b += ((uint32_t)k[7])<<24; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
422 c += k[8]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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changeset
|
423 c += ((uint32_t)k[9])<<8; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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424 c += ((uint32_t)k[10])<<16; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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425 c += ((uint32_t)k[11])<<24; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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426 mix(a,b,c); |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
427 length -= 12; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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428 k += 12; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
429 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
430 |
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diff
changeset
|
431 /*-------------------------------- last block: affect all 32 bits of (c) */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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432 switch(length) /* all the case statements fall through */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
433 { |
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|
434 case 12: c+=((uint32_t)k[11])<<24; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
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|
435 case 11: c+=((uint32_t)k[10])<<16; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
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|
436 case 10: c+=((uint32_t)k[9])<<8; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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437 case 9 : c+=k[8]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
438 case 8 : b+=((uint32_t)k[7])<<24; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
439 case 7 : b+=((uint32_t)k[6])<<16; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
440 case 6 : b+=((uint32_t)k[5])<<8; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
441 case 5 : b+=k[4]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
442 case 4 : a+=((uint32_t)k[3])<<24; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
443 case 3 : a+=((uint32_t)k[2])<<16; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
444 case 2 : a+=((uint32_t)k[1])<<8; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
445 case 1 : a+=k[0]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
446 break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
447 case 0 : return c; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
448 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
449 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
450 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
451 final(a,b,c); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
452 return c; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
453 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
454 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
455 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
456 /* |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
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|
457 * hashlittle2: return 2 32-bit hash values |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
458 * |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
459 * This is identical to hashlittle(), except it returns two 32-bit hash |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
460 * values instead of just one. This is good enough for hash table |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
461 * lookup with 2^^64 buckets, or if you want a second hash if you're not |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
462 * happy with the first, or if you want a probably-unique 64-bit ID for |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
463 * the key. *pc is better mixed than *pb, so use *pc first. If you want |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
464 * a 64-bit value do something like "*pc + (((uint64_t)*pb)<<32)". |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
465 */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
466 void HashJenkins3( |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
467 const void *key, /* the key to hash */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
468 size_t length, /* length of the key */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
469 uint32_t *pc, /* IN: primary initval, OUT: primary hash */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
470 uint32_t *pb) /* IN: secondary initval, OUT: secondary hash */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
471 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
472 uint32_t a,b,c; /* internal state */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
473 union { const void *ptr; size_t i; } u; /* needed for Mac Powerbook G4 */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
474 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
475 /* Set up the internal state */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
476 a = b = c = 0xdeadbeef + ((uint32_t)length) + *pc; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
477 c += *pb; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
478 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
479 u.ptr = key; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
480 if (HASH_LITTLE_ENDIAN && ((u.i & 0x3) == 0)) { |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
481 const uint32_t *k = (const uint32_t *)key; /* read 32-bit chunks */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
482 #ifdef VALGRIND |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
483 const uint8_t *k8; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
484 #endif |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
485 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
486 /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
487 while (length > 12) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
488 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
489 a += k[0]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
490 b += k[1]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
491 c += k[2]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
492 mix(a,b,c); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
493 length -= 12; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
494 k += 3; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
495 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
496 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
497 /*----------------------------- handle the last (probably partial) block */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
498 /* |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
499 * "k[2]&0xffffff" actually reads beyond the end of the string, but |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
500 * then masks off the part it's not allowed to read. Because the |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
501 * string is aligned, the masked-off tail is in the same word as the |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
502 * rest of the string. Every machine with memory protection I've seen |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
503 * does it on word boundaries, so is OK with this. But VALGRIND will |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
504 * still catch it and complain. The masking trick does make the hash |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
505 * noticably faster for short strings (like English words). |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
506 */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
507 #ifndef VALGRIND |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
508 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
509 switch(length) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
510 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
511 case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
512 case 11: c+=k[2]&0xffffff; b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
513 case 10: c+=k[2]&0xffff; b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
514 case 9 : c+=k[2]&0xff; b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
515 case 8 : b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
516 case 7 : b+=k[1]&0xffffff; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
517 case 6 : b+=k[1]&0xffff; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
518 case 5 : b+=k[1]&0xff; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
519 case 4 : a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
520 case 3 : a+=k[0]&0xffffff; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
521 case 2 : a+=k[0]&0xffff; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
522 case 1 : a+=k[0]&0xff; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
523 case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
524 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
525 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
526 #else /* make valgrind happy */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
527 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
528 k8 = (const uint8_t *)k; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
529 switch(length) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
530 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
531 case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
532 case 11: c+=((uint32_t)k8[10])<<16; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
533 case 10: c+=((uint32_t)k8[9])<<8; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
534 case 9 : c+=k8[8]; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
535 case 8 : b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
536 case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
537 case 6 : b+=((uint32_t)k8[5])<<8; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
538 case 5 : b+=k8[4]; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
539 case 4 : a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
540 case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
541 case 2 : a+=((uint32_t)k8[1])<<8; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
542 case 1 : a+=k8[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
543 case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
544 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
545 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
546 #endif /* !valgrind */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
547 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
548 } else if (HASH_LITTLE_ENDIAN && ((u.i & 0x1) == 0)) { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
549 const uint16_t *k = (const uint16_t *)key; /* read 16-bit chunks */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
550 const uint8_t *k8; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
551 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
552 /*--------------- all but last block: aligned reads and different mixing */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
553 while (length > 12) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
554 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
555 a += k[0] + (((uint32_t)k[1])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
556 b += k[2] + (((uint32_t)k[3])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
557 c += k[4] + (((uint32_t)k[5])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
558 mix(a,b,c); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
559 length -= 12; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
560 k += 6; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
561 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
562 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
563 /*----------------------------- handle the last (probably partial) block */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
564 k8 = (const uint8_t *)k; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
565 switch(length) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
566 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
567 case 12: c+=k[4]+(((uint32_t)k[5])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
568 b+=k[2]+(((uint32_t)k[3])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
569 a+=k[0]+(((uint32_t)k[1])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
570 break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
571 case 11: c+=((uint32_t)k8[10])<<16; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
572 case 10: c+=k[4]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
573 b+=k[2]+(((uint32_t)k[3])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
574 a+=k[0]+(((uint32_t)k[1])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
575 break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
576 case 9 : c+=k8[8]; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
577 case 8 : b+=k[2]+(((uint32_t)k[3])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
578 a+=k[0]+(((uint32_t)k[1])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
579 break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
580 case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
581 case 6 : b+=k[2]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
582 a+=k[0]+(((uint32_t)k[1])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
583 break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
584 case 5 : b+=k8[4]; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
585 case 4 : a+=k[0]+(((uint32_t)k[1])<<16); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
586 break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
587 case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
588 case 2 : a+=k[0]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
589 break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
590 case 1 : a+=k8[0]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
591 break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
592 case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
593 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
594 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
595 } else { /* need to read the key one byte at a time */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
596 const uint8_t *k = (const uint8_t *)key; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
597 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
598 /*--------------- all but the last block: affect some 32 bits of (a,b,c) */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
599 while (length > 12) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
600 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
601 a += k[0]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
602 a += ((uint32_t)k[1])<<8; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
603 a += ((uint32_t)k[2])<<16; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
604 a += ((uint32_t)k[3])<<24; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
605 b += k[4]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
606 b += ((uint32_t)k[5])<<8; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
607 b += ((uint32_t)k[6])<<16; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
608 b += ((uint32_t)k[7])<<24; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
609 c += k[8]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
610 c += ((uint32_t)k[9])<<8; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
611 c += ((uint32_t)k[10])<<16; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
612 c += ((uint32_t)k[11])<<24; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
613 mix(a,b,c); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
614 length -= 12; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
615 k += 12; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
616 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
617 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
618 /*-------------------------------- last block: affect all 32 bits of (c) */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
619 switch(length) /* all the case statements fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
620 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
621 case 12: c+=((uint32_t)k[11])<<24; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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622 case 11: c+=((uint32_t)k[10])<<16; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
623 case 10: c+=((uint32_t)k[9])<<8; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
624 case 9 : c+=k[8]; |
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diff
changeset
|
625 case 8 : b+=((uint32_t)k[7])<<24; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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626 case 7 : b+=((uint32_t)k[6])<<16; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
627 case 6 : b+=((uint32_t)k[5])<<8; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
628 case 5 : b+=k[4]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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changeset
|
629 case 4 : a+=((uint32_t)k[3])<<24; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
630 case 3 : a+=((uint32_t)k[2])<<16; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
631 case 2 : a+=((uint32_t)k[1])<<8; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
632 case 1 : a+=k[0]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
633 break; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
634 case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
635 } |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
636 } |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
637 |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
638 final(a,b,c); |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
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|
639 *pc=c; *pb=b; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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changeset
|
640 } |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
641 |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
642 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
643 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
644 /* |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
645 * hashbig(): |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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changeset
|
646 * This is the same as hashword() on big-endian machines. It is different |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
647 * from hashlittle() on all machines. hashbig() takes advantage of |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
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|
648 * big-endian byte ordering. |
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|
649 */ |
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|
650 static uint32_t hashbig( const void *key, size_t length, uint32_t initval) |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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651 { |
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652 uint32_t a,b,c; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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653 union { const void *ptr; size_t i; } u; /* to cast key to (size_t) happily */ |
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|
654 |
d901c9f41a6a
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|
655 /* Set up the internal state */ |
d901c9f41a6a
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changeset
|
656 a = b = c = 0xdeadbeef + ((uint32_t)length) + initval; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
657 |
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658 u.ptr = key; |
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|
659 if (HASH_BIG_ENDIAN && ((u.i & 0x3) == 0)) { |
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660 const uint32_t *k = (const uint32_t *)key; /* read 32-bit chunks */ |
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|
661 #ifdef VALGRIND |
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662 const uint8_t *k8; |
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663 #endif |
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|
664 |
d901c9f41a6a
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|
665 /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
666 while (length > 12) |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
667 { |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
668 a += k[0]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
669 b += k[1]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
670 c += k[2]; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
671 mix(a,b,c); |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
672 length -= 12; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
673 k += 3; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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|
674 } |
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|
675 |
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|
676 /*----------------------------- handle the last (probably partial) block */ |
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|
677 /* |
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diff
changeset
|
678 * "k[2]<<8" actually reads beyond the end of the string, but |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
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|
679 * then shifts out the part it's not allowed to read. Because the |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
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|
680 * string is aligned, the illegal read is in the same word as the |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
681 * rest of the string. Every machine with memory protection I've seen |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
682 * does it on word boundaries, so is OK with this. But VALGRIND will |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
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diff
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|
683 * still catch it and complain. The masking trick does make the hash |
d901c9f41a6a
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diff
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|
684 * noticably faster for short strings (like English words). |
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diff
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|
685 */ |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
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|
686 #ifndef VALGRIND |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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changeset
|
687 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
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diff
changeset
|
688 switch(length) |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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parents:
diff
changeset
|
689 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
690 case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
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|
691 case 11: c+=k[2]&0xffffff00; b+=k[1]; a+=k[0]; break; |
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Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
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diff
changeset
|
692 case 10: c+=k[2]&0xffff0000; b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
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diff
changeset
|
693 case 9 : c+=k[2]&0xff000000; b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
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diff
changeset
|
694 case 8 : b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
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diff
changeset
|
695 case 7 : b+=k[1]&0xffffff00; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
696 case 6 : b+=k[1]&0xffff0000; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
697 case 5 : b+=k[1]&0xff000000; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
698 case 4 : a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
699 case 3 : a+=k[0]&0xffffff00; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
700 case 2 : a+=k[0]&0xffff0000; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
701 case 1 : a+=k[0]&0xff000000; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
702 case 0 : return c; /* zero length strings require no mixing */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
703 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
704 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
705 #else /* make valgrind happy */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
706 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
707 k8 = (const uint8_t *)k; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
708 switch(length) /* all the case statements fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
709 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
710 case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
711 case 11: c+=((uint32_t)k8[10])<<8; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
712 case 10: c+=((uint32_t)k8[9])<<16; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
713 case 9 : c+=((uint32_t)k8[8])<<24; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
714 case 8 : b+=k[1]; a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
715 case 7 : b+=((uint32_t)k8[6])<<8; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
716 case 6 : b+=((uint32_t)k8[5])<<16; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
717 case 5 : b+=((uint32_t)k8[4])<<24; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
718 case 4 : a+=k[0]; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
719 case 3 : a+=((uint32_t)k8[2])<<8; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
720 case 2 : a+=((uint32_t)k8[1])<<16; /* fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
721 case 1 : a+=((uint32_t)k8[0])<<24; break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
722 case 0 : return c; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
723 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
724 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
725 #endif /* !VALGRIND */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
726 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
727 } else { /* need to read the key one byte at a time */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
728 const uint8_t *k = (const uint8_t *)key; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
729 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
730 /*--------------- all but the last block: affect some 32 bits of (a,b,c) */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
731 while (length > 12) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
732 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
733 a += ((uint32_t)k[0])<<24; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
734 a += ((uint32_t)k[1])<<16; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
735 a += ((uint32_t)k[2])<<8; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
736 a += ((uint32_t)k[3]); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
737 b += ((uint32_t)k[4])<<24; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
738 b += ((uint32_t)k[5])<<16; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
739 b += ((uint32_t)k[6])<<8; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
740 b += ((uint32_t)k[7]); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
741 c += ((uint32_t)k[8])<<24; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
742 c += ((uint32_t)k[9])<<16; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
743 c += ((uint32_t)k[10])<<8; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
744 c += ((uint32_t)k[11]); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
745 mix(a,b,c); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
746 length -= 12; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
747 k += 12; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
748 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
749 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
750 /*-------------------------------- last block: affect all 32 bits of (c) */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
751 switch(length) /* all the case statements fall through */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
752 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
753 case 12: c+=k[11]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
754 case 11: c+=((uint32_t)k[10])<<8; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
755 case 10: c+=((uint32_t)k[9])<<16; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
756 case 9 : c+=((uint32_t)k[8])<<24; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
757 case 8 : b+=k[7]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
758 case 7 : b+=((uint32_t)k[6])<<8; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
759 case 6 : b+=((uint32_t)k[5])<<16; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
760 case 5 : b+=((uint32_t)k[4])<<24; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
761 case 4 : a+=k[3]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
762 case 3 : a+=((uint32_t)k[2])<<8; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
763 case 2 : a+=((uint32_t)k[1])<<16; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
764 case 1 : a+=((uint32_t)k[0])<<24; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
765 break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
766 case 0 : return c; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
767 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
768 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
769 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
770 final(a,b,c); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
771 return c; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
772 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
773 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
774 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
775 #ifdef SELF_TEST |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
776 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
777 /* used for timings */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
778 void driver1() |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
779 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
780 uint8_t buf[256]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
781 uint32_t i; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
782 uint32_t h=0; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
783 time_t a,z; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
784 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
785 time(&a); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
786 for (i=0; i<256; ++i) buf[i] = 'x'; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
787 for (i=0; i<1; ++i) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
788 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
789 h = hashlittle(&buf[0],1,h); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
790 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
791 time(&z); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
792 if (z-a > 0) printf("time %d %.8x\n", z-a, h); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
793 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
794 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
795 /* check that every input bit changes every output bit half the time */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
796 #define HASHSTATE 1 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
797 #define HASHLEN 1 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
798 #define MAXPAIR 60 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
799 #define MAXLEN 70 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
800 void driver2() |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
801 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
802 uint8_t qa[MAXLEN+1], qb[MAXLEN+2], *a = &qa[0], *b = &qb[1]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
803 uint32_t c[HASHSTATE], d[HASHSTATE], i=0, j=0, k, l, m=0, z; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
804 uint32_t e[HASHSTATE],f[HASHSTATE],g[HASHSTATE],h[HASHSTATE]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
805 uint32_t x[HASHSTATE],y[HASHSTATE]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
806 uint32_t hlen; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
807 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
808 printf("No more than %d trials should ever be needed \n",MAXPAIR/2); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
809 for (hlen=0; hlen < MAXLEN; ++hlen) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
810 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
811 z=0; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
812 for (i=0; i<hlen; ++i) /*----------------------- for each input byte, */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
813 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
814 for (j=0; j<8; ++j) /*------------------------ for each input bit, */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
815 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
816 for (m=1; m<8; ++m) /*------------ for serveral possible initvals, */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
817 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
818 for (l=0; l<HASHSTATE; ++l) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
819 e[l]=f[l]=g[l]=h[l]=x[l]=y[l]=~((uint32_t)0); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
820 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
821 /*---- check that every output bit is affected by that input bit */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
822 for (k=0; k<MAXPAIR; k+=2) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
823 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
824 uint32_t finished=1; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
825 /* keys have one bit different */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
826 for (l=0; l<hlen+1; ++l) {a[l] = b[l] = (uint8_t)0;} |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
827 /* have a and b be two keys differing in only one bit */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
828 a[i] ^= (k<<j); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
829 a[i] ^= (k>>(8-j)); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
830 c[0] = hashlittle(a, hlen, m); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
831 b[i] ^= ((k+1)<<j); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
832 b[i] ^= ((k+1)>>(8-j)); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
833 d[0] = hashlittle(b, hlen, m); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
834 /* check every bit is 1, 0, set, and not set at least once */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
835 for (l=0; l<HASHSTATE; ++l) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
836 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
837 e[l] &= (c[l]^d[l]); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
838 f[l] &= ~(c[l]^d[l]); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
839 g[l] &= c[l]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
840 h[l] &= ~c[l]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
841 x[l] &= d[l]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
842 y[l] &= ~d[l]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
843 if (e[l]|f[l]|g[l]|h[l]|x[l]|y[l]) finished=0; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
844 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
845 if (finished) break; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
846 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
847 if (k>z) z=k; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
848 if (k==MAXPAIR) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
849 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
850 printf("Some bit didn't change: "); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
851 printf("%.8x %.8x %.8x %.8x %.8x %.8x ", |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
852 e[0],f[0],g[0],h[0],x[0],y[0]); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
853 printf("i %d j %d m %d len %d\n", i, j, m, hlen); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
854 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
855 if (z==MAXPAIR) goto done; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
856 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
857 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
858 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
859 done: |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
860 if (z < MAXPAIR) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
861 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
862 printf("Mix success %2d bytes %2d initvals ",i,m); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
863 printf("required %d trials\n", z/2); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
864 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
865 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
866 printf("\n"); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
867 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
868 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
869 /* Check for reading beyond the end of the buffer and alignment problems */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
870 void driver3() |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
871 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
872 uint8_t buf[MAXLEN+20], *b; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
873 uint32_t len; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
874 uint8_t q[] = "This is the time for all good men to come to the aid of their country..."; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
875 uint32_t h; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
876 uint8_t qq[] = "xThis is the time for all good men to come to the aid of their country..."; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
877 uint32_t i; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
878 uint8_t qqq[] = "xxThis is the time for all good men to come to the aid of their country..."; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
879 uint32_t j; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
880 uint8_t qqqq[] = "xxxThis is the time for all good men to come to the aid of their country..."; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
881 uint32_t ref,x,y; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
882 uint8_t *p; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
883 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
884 printf("Endianness. These lines should all be the same (for values filled in):\n"); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
885 printf("%.8x %.8x %.8x\n", |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
886 hashword((const uint32_t *)q, (sizeof(q)-1)/4, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
887 hashword((const uint32_t *)q, (sizeof(q)-5)/4, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
888 hashword((const uint32_t *)q, (sizeof(q)-9)/4, 13)); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
889 p = q; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
890 printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n", |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
891 hashlittle(p, sizeof(q)-1, 13), hashlittle(p, sizeof(q)-2, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
892 hashlittle(p, sizeof(q)-3, 13), hashlittle(p, sizeof(q)-4, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
893 hashlittle(p, sizeof(q)-5, 13), hashlittle(p, sizeof(q)-6, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
894 hashlittle(p, sizeof(q)-7, 13), hashlittle(p, sizeof(q)-8, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
895 hashlittle(p, sizeof(q)-9, 13), hashlittle(p, sizeof(q)-10, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
896 hashlittle(p, sizeof(q)-11, 13), hashlittle(p, sizeof(q)-12, 13)); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
897 p = &qq[1]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
898 printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n", |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
899 hashlittle(p, sizeof(q)-1, 13), hashlittle(p, sizeof(q)-2, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
900 hashlittle(p, sizeof(q)-3, 13), hashlittle(p, sizeof(q)-4, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
901 hashlittle(p, sizeof(q)-5, 13), hashlittle(p, sizeof(q)-6, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
902 hashlittle(p, sizeof(q)-7, 13), hashlittle(p, sizeof(q)-8, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
903 hashlittle(p, sizeof(q)-9, 13), hashlittle(p, sizeof(q)-10, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
904 hashlittle(p, sizeof(q)-11, 13), hashlittle(p, sizeof(q)-12, 13)); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
905 p = &qqq[2]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
906 printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n", |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
907 hashlittle(p, sizeof(q)-1, 13), hashlittle(p, sizeof(q)-2, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
908 hashlittle(p, sizeof(q)-3, 13), hashlittle(p, sizeof(q)-4, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
909 hashlittle(p, sizeof(q)-5, 13), hashlittle(p, sizeof(q)-6, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
910 hashlittle(p, sizeof(q)-7, 13), hashlittle(p, sizeof(q)-8, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
911 hashlittle(p, sizeof(q)-9, 13), hashlittle(p, sizeof(q)-10, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
912 hashlittle(p, sizeof(q)-11, 13), hashlittle(p, sizeof(q)-12, 13)); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
913 p = &qqqq[3]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
914 printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n", |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
915 hashlittle(p, sizeof(q)-1, 13), hashlittle(p, sizeof(q)-2, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
916 hashlittle(p, sizeof(q)-3, 13), hashlittle(p, sizeof(q)-4, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
917 hashlittle(p, sizeof(q)-5, 13), hashlittle(p, sizeof(q)-6, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
918 hashlittle(p, sizeof(q)-7, 13), hashlittle(p, sizeof(q)-8, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
919 hashlittle(p, sizeof(q)-9, 13), hashlittle(p, sizeof(q)-10, 13), |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
920 hashlittle(p, sizeof(q)-11, 13), hashlittle(p, sizeof(q)-12, 13)); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
921 printf("\n"); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
922 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
923 /* check that hashlittle2 and hashlittle produce the same results */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
924 i=47; j=0; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
925 hashlittle2(q, sizeof(q), &i, &j); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
926 if (hashlittle(q, sizeof(q), 47) != i) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
927 printf("hashlittle2 and hashlittle mismatch\n"); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
928 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
929 /* check that hashword2 and hashword produce the same results */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
930 len = 0xdeadbeef; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
931 i=47, j=0; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
932 hashword2(&len, 1, &i, &j); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
933 if (hashword(&len, 1, 47) != i) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
934 printf("hashword2 and hashword mismatch %x %x\n", |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
935 i, hashword(&len, 1, 47)); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
936 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
937 /* check hashlittle doesn't read before or after the ends of the string */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
938 for (h=0, b=buf+1; h<8; ++h, ++b) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
939 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
940 for (i=0; i<MAXLEN; ++i) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
941 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
942 len = i; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
943 for (j=0; j<i; ++j) *(b+j)=0; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
944 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
945 /* these should all be equal */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
946 ref = hashlittle(b, len, (uint32_t)1); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
947 *(b+i)=(uint8_t)~0; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
948 *(b-1)=(uint8_t)~0; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
949 x = hashlittle(b, len, (uint32_t)1); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
950 y = hashlittle(b, len, (uint32_t)1); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
951 if ((ref != x) || (ref != y)) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
952 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
953 printf("alignment error: %.8x %.8x %.8x %d %d\n",ref,x,y, |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
954 h, i); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
955 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
956 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
957 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
958 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
959 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
960 /* check for problems with nulls */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
961 void driver4() |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
962 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
963 uint8_t buf[1]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
964 uint32_t h,i,state[HASHSTATE]; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
965 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
966 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
967 buf[0] = ~0; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
968 for (i=0; i<HASHSTATE; ++i) state[i] = 1; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
969 printf("These should all be different\n"); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
970 for (i=0, h=0; i<8; ++i) |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
971 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
972 h = hashlittle(buf, 0, h); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
973 printf("%2ld 0-byte strings, hash is %.8x\n", i, h); |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
974 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
975 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
976 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
977 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
978 int main() |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
979 { |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
980 driver1(); /* test that the key is hashed: used for timings */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
981 driver2(); /* test that whole key is hashed thoroughly */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
982 driver3(); /* test that nothing but the key is hashed */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
983 driver4(); /* test hashing multiple buffers (all buffers are null) */ |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
984 return 1; |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
985 } |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
986 |
d901c9f41a6a
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
dawe
parents:
diff
changeset
|
987 #endif /* SELF_TEST */ |