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This commit is contained in:
Igor Pavlov
2017-08-29 20:49:43 +01:00
committed by Kornel
parent 2efa10565a
commit b5dc853b24
110 changed files with 4714 additions and 1700 deletions
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14
C/XzCrc64Opt.c
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@@ -1,5 +1,5 @@
/* XzCrc64Opt.c -- CRC64 calculation
2017-04-03 : Igor Pavlov : Public domain */
2017-06-30 : Igor Pavlov : Public domain */
#include "Precomp.h"
@@ -7,13 +7,13 @@
#ifndef MY_CPU_BE
#define CRC_UPDATE_BYTE_2(crc, b) (table[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
#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)
{
const Byte *p = (const Byte *)data;
for (; size > 0 && ((unsigned)(ptrdiff_t)p & 3) != 0; size--, p++)
v = CRC_UPDATE_BYTE_2(v, *p);
v = CRC64_UPDATE_BYTE_2(v, *p);
for (; size >= 4; size -= 4, p += 4)
{
UInt32 d = (UInt32)v ^ *(const UInt32 *)p;
@@ -24,7 +24,7 @@ UInt64 MY_FAST_CALL XzCrc64UpdateT4(UInt64 v, const void *data, size_t size, con
^ (table + 0x000)[((d >> 24))];
}
for (; size > 0; size--, p++)
v = CRC_UPDATE_BYTE_2(v, *p);
v = CRC64_UPDATE_BYTE_2(v, *p);
return v;
}
@@ -43,7 +43,7 @@ UInt64 MY_FAST_CALL XzCrc64UpdateT4(UInt64 v, const void *data, size_t size, con
| ((v << 40) & ((UInt64)0xFF << 48)) \
| ((v << 56)))
#define CRC_UPDATE_BYTE_2_BE(crc, b) (table[(Byte)((crc) >> 56) ^ (b)] ^ ((crc) << 8))
#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)
{
@@ -51,7 +51,7 @@ UInt64 MY_FAST_CALL XzCrc64UpdateT1_BeT4(UInt64 v, const void *data, size_t size
table += 0x100;
v = CRC_UINT64_SWAP(v);
for (; size > 0 && ((unsigned)(ptrdiff_t)p & 3) != 0; size--, p++)
v = CRC_UPDATE_BYTE_2_BE(v, *p);
v = CRC64_UPDATE_BYTE_2_BE(v, *p);
for (; size >= 4; size -= 4, p += 4)
{
UInt32 d = (UInt32)(v >> 32) ^ *(const UInt32 *)p;
@@ -62,7 +62,7 @@ UInt64 MY_FAST_CALL XzCrc64UpdateT1_BeT4(UInt64 v, const void *data, size_t size
^ (table + 0x300)[((d >> 24))];
}
for (; size > 0; size--, p++)
v = CRC_UPDATE_BYTE_2_BE(v, *p);
v = CRC64_UPDATE_BYTE_2_BE(v, *p);
return CRC_UINT64_SWAP(v);
}