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This commit is contained in:
Igor Pavlov
2021-07-22 23:00:14 +01:00
committed by Kornel
parent 4a960640a3
commit 585698650f
619 changed files with 34904 additions and 10859 deletions
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8
C/XzCrc64Opt.c
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@@ -1,5 +1,5 @@
/* XzCrc64Opt.c -- CRC64 calculation
2017-06-30 : Igor Pavlov : Public domain */
2021-02-09 : Igor Pavlov : Public domain */
#include "Precomp.h"
@@ -9,6 +9,7 @@
#define CRC64_UPDATE_BYTE_2(crc, b) (table[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
UInt64 MY_FAST_CALL XzCrc64UpdateT4(UInt64 v, const void *data, size_t size, const UInt64 *table);
UInt64 MY_FAST_CALL XzCrc64UpdateT4(UInt64 v, const void *data, size_t size, const UInt64 *table)
{
const Byte *p = (const Byte *)data;
@@ -16,7 +17,7 @@ UInt64 MY_FAST_CALL XzCrc64UpdateT4(UInt64 v, const void *data, size_t size, con
v = CRC64_UPDATE_BYTE_2(v, *p);
for (; size >= 4; size -= 4, p += 4)
{
UInt32 d = (UInt32)v ^ *(const UInt32 *)p;
UInt32 d = (UInt32)v ^ *(const UInt32 *)(const void *)p;
v = (v >> 32)
^ (table + 0x300)[((d ) & 0xFF)]
^ (table + 0x200)[((d >> 8) & 0xFF)]
@@ -45,6 +46,7 @@ UInt64 MY_FAST_CALL XzCrc64UpdateT4(UInt64 v, const void *data, size_t size, con
#define CRC64_UPDATE_BYTE_2_BE(crc, b) (table[(Byte)((crc) >> 56) ^ (b)] ^ ((crc) << 8))
UInt64 MY_FAST_CALL XzCrc64UpdateT1_BeT4(UInt64 v, const void *data, size_t size, const UInt64 *table);
UInt64 MY_FAST_CALL XzCrc64UpdateT1_BeT4(UInt64 v, const void *data, size_t size, const UInt64 *table)
{
const Byte *p = (const Byte *)data;
@@ -54,7 +56,7 @@ UInt64 MY_FAST_CALL XzCrc64UpdateT1_BeT4(UInt64 v, const void *data, size_t size
v = CRC64_UPDATE_BYTE_2_BE(v, *p);
for (; size >= 4; size -= 4, p += 4)
{
UInt32 d = (UInt32)(v >> 32) ^ *(const UInt32 *)p;
UInt32 d = (UInt32)(v >> 32) ^ *(const UInt32 *)(const void *)p;
v = (v << 32)
^ (table + 0x000)[((d ) & 0xFF)]
^ (table + 0x100)[((d >> 8) & 0xFF)]