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35 lines
540 B
Common Lisp
35 lines
540 B
Common Lisp
/**
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* Author......: See docs/credits.txt
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* License.....: MIT
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*/
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#include "inc_vendor.h"
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#include "inc_types.h"
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#include "inc_common.h"
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#include "inc_truecrypt_crc32.h"
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DECLSPEC u32 round_crc32 (u32 a, const u32 v)
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{
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const u32 k = (a ^ v) & 0xff;
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const u32 s = a >> 8;
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a = crc32tab[k];
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a ^= s;
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return a;
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}
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DECLSPEC u32 round_crc32_4 (const u32 w, const u32 iv)
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{
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u32 a = iv;
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a = round_crc32 (a, w >> 0);
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a = round_crc32 (a, w >> 8);
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a = round_crc32 (a, w >> 16);
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a = round_crc32 (a, w >> 24);
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return a;
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}
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