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annotate mycrypt_macros.h @ 89:cecb105ff479 libtomcrypt

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Fix for big-endian load/store macros
author Matt Johnston <matt@ucc.asn.au>
date Fri, 03 Sep 2004 08:31:12 +0000
parents 901233045998
children 7ed585a2c53b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* fix for MSVC ...evil! */
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2 #ifdef _MSC_VER
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3 #define CONST64(n) n ## ui64
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4 typedef unsigned __int64 ulong64;
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5 #else
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6 #define CONST64(n) n ## ULL
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7 typedef unsigned long long ulong64;
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8 #endif
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9
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10 /* this is the "32-bit at least" data type
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11 * Re-define it to suit your platform but it must be at least 32-bits
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12 */
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13 typedef unsigned long ulong32;
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14
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15 /* ---- HELPER MACROS ---- */
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16 #ifdef ENDIAN_NEUTRAL
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17
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18 #define STORE32L(x, y) \
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19 { (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \
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20 (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); }
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21
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22 #define LOAD32L(x, y) \
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23 { x = ((unsigned long)((y)[3] & 255)<<24) | \
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24 ((unsigned long)((y)[2] & 255)<<16) | \
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25 ((unsigned long)((y)[1] & 255)<<8) | \
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26 ((unsigned long)((y)[0] & 255)); }
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27
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28 #define STORE64L(x, y) \
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29 { (y)[7] = (unsigned char)(((x)>>56)&255); (y)[6] = (unsigned char)(((x)>>48)&255); \
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30 (y)[5] = (unsigned char)(((x)>>40)&255); (y)[4] = (unsigned char)(((x)>>32)&255); \
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31 (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \
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32 (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); }
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33
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34 #define LOAD64L(x, y) \
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35 { x = (((ulong64)((y)[7] & 255))<<56)|(((ulong64)((y)[6] & 255))<<48)| \
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36 (((ulong64)((y)[5] & 255))<<40)|(((ulong64)((y)[4] & 255))<<32)| \
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37 (((ulong64)((y)[3] & 255))<<24)|(((ulong64)((y)[2] & 255))<<16)| \
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38 (((ulong64)((y)[1] & 255))<<8)|(((ulong64)((y)[0] & 255))); }
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39
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40 #define STORE32H(x, y) \
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41 { (y)[0] = (unsigned char)(((x)>>24)&255); (y)[1] = (unsigned char)(((x)>>16)&255); \
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42 (y)[2] = (unsigned char)(((x)>>8)&255); (y)[3] = (unsigned char)((x)&255); }
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43
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44 #define LOAD32H(x, y) \
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45 { x = ((unsigned long)((y)[0] & 255)<<24) | \
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46 ((unsigned long)((y)[1] & 255)<<16) | \
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47 ((unsigned long)((y)[2] & 255)<<8) | \
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48 ((unsigned long)((y)[3] & 255)); }
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49
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50 #define STORE64H(x, y) \
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51 { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255); \
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52 (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255); \
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53 (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255); \
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54 (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); }
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55
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56 #define LOAD64H(x, y) \
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57 { x = (((ulong64)((y)[0] & 255))<<56)|(((ulong64)((y)[1] & 255))<<48) | \
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58 (((ulong64)((y)[2] & 255))<<40)|(((ulong64)((y)[3] & 255))<<32) | \
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59 (((ulong64)((y)[4] & 255))<<24)|(((ulong64)((y)[5] & 255))<<16) | \
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60 (((ulong64)((y)[6] & 255))<<8)|(((ulong64)((y)[7] & 255))); }
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61
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62 #endif /* ENDIAN_NEUTRAL */
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63
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64 #ifdef ENDIAN_LITTLE
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65
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66 #define STORE32H(x, y) \
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67 { (y)[0] = (unsigned char)(((x)>>24)&255); (y)[1] = (unsigned char)(((x)>>16)&255); \
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68 (y)[2] = (unsigned char)(((x)>>8)&255); (y)[3] = (unsigned char)((x)&255); }
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69
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70 #define LOAD32H(x, y) \
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71 { x = ((unsigned long)((y)[0] & 255)<<24) | \
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72 ((unsigned long)((y)[1] & 255)<<16) | \
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73 ((unsigned long)((y)[2] & 255)<<8) | \
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74 ((unsigned long)((y)[3] & 255)); }
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75
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76 #define STORE64H(x, y) \
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77 { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255); \
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78 (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255); \
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79 (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255); \
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80 (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); }
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81
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82 #define LOAD64H(x, y) \
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83 { x = (((ulong64)((y)[0] & 255))<<56)|(((ulong64)((y)[1] & 255))<<48) | \
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84 (((ulong64)((y)[2] & 255))<<40)|(((ulong64)((y)[3] & 255))<<32) | \
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85 (((ulong64)((y)[4] & 255))<<24)|(((ulong64)((y)[5] & 255))<<16) | \
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86 (((ulong64)((y)[6] & 255))<<8)|(((ulong64)((y)[7] & 255))); }
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87
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88 #ifdef ENDIAN_32BITWORD
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89
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90 #define STORE32L(x, y) \
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91 { unsigned long __t = (x); memcpy(y, &__t, 4); }
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92
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93 #define LOAD32L(x, y) \
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94 memcpy(&(x), y, 4);
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95
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96 #define STORE64L(x, y) \
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97 { (y)[7] = (unsigned char)(((x)>>56)&255); (y)[6] = (unsigned char)(((x)>>48)&255); \
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98 (y)[5] = (unsigned char)(((x)>>40)&255); (y)[4] = (unsigned char)(((x)>>32)&255); \
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99 (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \
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100 (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); }
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101
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102 #define LOAD64L(x, y) \
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103 { x = (((ulong64)((y)[7] & 255))<<56)|(((ulong64)((y)[6] & 255))<<48)| \
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104 (((ulong64)((y)[5] & 255))<<40)|(((ulong64)((y)[4] & 255))<<32)| \
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105 (((ulong64)((y)[3] & 255))<<24)|(((ulong64)((y)[2] & 255))<<16)| \
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106 (((ulong64)((y)[1] & 255))<<8)|(((ulong64)((y)[0] & 255))); }
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107
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108 #else /* 64-bit words then */
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109
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110 #define STORE32L(x, y) \
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111 { unsigned long __t = (x); memcpy(y, &__t, 4); }
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112
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113 #define LOAD32L(x, y) \
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114 { memcpy(&(x), y, 4); x &= 0xFFFFFFFF; }
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115
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116 #define STORE64L(x, y) \
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117 { ulong64 __t = (x); memcpy(y, &__t, 8); }
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118
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119 #define LOAD64L(x, y) \
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120 { memcpy(&(x), y, 8); }
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121
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122 #endif /* ENDIAN_64BITWORD */
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123
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124 #endif /* ENDIAN_LITTLE */
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125
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126 #ifdef ENDIAN_BIG
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127 #define STORE32L(x, y) \
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128 { (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \
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129 (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); }
0
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130
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131 #define LOAD32L(x, y) \
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132 { x = ((unsigned long)((y)[3] & 255)<<24) | \
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133 ((unsigned long)((y)[2] & 255)<<16) | \
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134 ((unsigned long)((y)[1] & 255)<<8) | \
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135 ((unsigned long)((y)[0] & 255)); }
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136
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137 #define STORE64L(x, y) \
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138 { (y)[7] = (unsigned char)(((x)>>56)&255); (y)[6] = (unsigned char)(((x)>>48)&255); \
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139 (y)[5] = (unsigned char)(((x)>>40)&255); (y)[4] = (unsigned char)(((x)>>32)&255); \
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140 (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255); \
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141 (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); }
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142
89
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143 #define LOAD64L(x, y) \
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144 { x = (((ulong64)((y)[7] & 255))<<56)|(((ulong64)((y)[6] & 255))<<48)| \
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145 (((ulong64)((y)[5] & 255))<<40)|(((ulong64)((y)[4] & 255))<<32)| \
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146 (((ulong64)((y)[3] & 255))<<24)|(((ulong64)((y)[2] & 255))<<16)| \
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147 (((ulong64)((y)[1] & 255))<<8)|(((ulong64)((y)[0] & 255))); }
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148
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149 #ifdef ENDIAN_32BITWORD
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150
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151 #define STORE32H(x, y) \
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152 { unsigned long __t = (x); memcpy(y, &__t, 4); }
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153
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154 #define LOAD32H(x, y) \
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155 memcpy(&(x), y, 4);
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156
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157 #define STORE64H(x, y) \
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158 { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255); \
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159 (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255); \
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160 (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255); \
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161 (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); }
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162
89
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163 #define LOAD64H(x, y) \
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164 { x = (((ulong64)((y)[0] & 255))<<56)|(((ulong64)((y)[1] & 255))<<48) | \
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165 (((ulong64)((y)[2] & 255))<<40)|(((ulong64)((y)[3] & 255))<<32) | \
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166 (((ulong64)((y)[4] & 255))<<24)|(((ulong64)((y)[5] & 255))<<16) | \
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167 (((ulong64)((y)[6] & 255))<<8)|(((ulong64)((y)[7] & 255))); }
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168
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169 #else /* 64-bit words then */
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170
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171 #define STORE32H(x, y) \
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172 { unsigned long __t = (x); memcpy(y, &__t, 4); }
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173
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174 #define LOAD32H(x, y) \
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175 { memcpy(&(x), y, 4); x &= 0xFFFFFFFF; }
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176
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177 #define STORE64H(x, y) \
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178 { ulong64 __t = (x); memcpy(y, &__t, 8); }
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179
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180 #define LOAD64H(x, y) \
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181 { memcpy(&(x), y, 8); }
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182
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183 #endif /* ENDIAN_64BITWORD */
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184 #endif /* ENDIAN_BIG */
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185
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186 #define BSWAP(x) ( ((x>>24)&0x000000FFUL) | ((x<<24)&0xFF000000UL) | \
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187 ((x>>8)&0x0000FF00UL) | ((x<<8)&0x00FF0000UL) )
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188
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189 #ifdef _MSC_VER
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190
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191 /* instrinsic rotate */
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192 #include <stdlib.h>
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193 #pragma intrinsic(_lrotr,_lrotl)
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194 #define ROR(x,n) _lrotr(x,n)
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195 #define ROL(x,n) _lrotl(x,n)
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196
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197 #elif defined(__GNUC__) && defined(__i386__) && !defined(INTEL_CC)
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198
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199 static inline unsigned long ROL(unsigned long word, int i)
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200 {
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201 __asm__("roll %%cl,%0"
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202 :"=r" (word)
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203 :"0" (word),"c" (i));
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204 return word;
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205 }
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206
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207 static inline unsigned long ROR(unsigned long word, int i)
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208 {
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209 __asm__("rorl %%cl,%0"
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210 :"=r" (word)
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211 :"0" (word),"c" (i));
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212 return word;
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213 }
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214
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215 #else
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216
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217 /* rotates the hard way */
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218 #define ROL(x, y) ( (((unsigned long)(x)<<(unsigned long)((y)&31)) | (((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
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219 #define ROR(x, y) ( ((((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)((y)&31)) | ((unsigned long)(x)<<(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
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220
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221 #endif
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222
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223 #define ROL64(x, y) \
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224 ( (((x)<<((ulong64)(y)&63)) | \
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225 (((x)&CONST64(0xFFFFFFFFFFFFFFFF))>>((ulong64)64-((y)&63)))) & CONST64(0xFFFFFFFFFFFFFFFF))
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226
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227 #define ROR64(x, y) \
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228 ( ((((x)&CONST64(0xFFFFFFFFFFFFFFFF))>>((ulong64)(y)&CONST64(63))) | \
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229 ((x)<<((ulong64)(64-((y)&CONST64(63)))))) & CONST64(0xFFFFFFFFFFFFFFFF))
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230
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231 #undef MAX
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232 #undef MIN
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233 #define MAX(x, y) ( ((x)>(y))?(x):(y) )
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234 #define MIN(x, y) ( ((x)<(y))?(x):(y) )
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235
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236 /* extract a byte portably */
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237 #ifdef _MSC_VER
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238 #define byte(x, n) ((unsigned char)((x) >> (8 * (n))))
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239 #else
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240 #define byte(x, n) (((x) >> (8 * (n))) & 255)
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241 #endif