7zCrcOpt.c File Reference

#include "Precomp.h"
#include "CpuArch.h"

Macros
#define	Z7_CRC_NUM_TABLES_USE   12
#define	CRC_UPDATE_BYTE_2(crc, b)
#define	Q(n, d)
#define	R(a)
#define	CRC_FUNC_PRE_LE2(step)
#define	CRC_FUNC_PRE_LE(step)
#define	U2(r, op)
#define	U(r)
#define	CRC_UPDATE_BYTE_2_BE(crc, b)
#define	Q(n, d)
#define	R(a)
#define	CRC_FUNC_PRE_BE2(step)
#define	CRC_FUNC_PRE_BE(step)
#define	U2(r, op)
#define	U(r)

Functions
	CRC_FUNC_PRE_LE (Z7_CRC_NUM_TABLES_USE)
	CRC_FUNC_PRE_BE (Z7_CRC_NUM_TABLES_USE)

Macro Definition Documentation

CRC_FUNC_PRE_BE

#define CRC_FUNC_PRE_BE

(

step

)

Value:

        CRC_FUNC_PRE_BE2(step); \
        CRC_FUNC_PRE_BE2(step)

CRC_FUNC_PRE_BE2

#define CRC_FUNC_PRE_BE2

(

step

)

Value:

UInt32 Z7_FASTCALL CrcUpdateT1_BeT ## step (UInt32 v, const void *data, size_t size, const UInt32 *table)

CRC_FUNC_PRE_LE

#define CRC_FUNC_PRE_LE

(

step

)

Value:

        CRC_FUNC_PRE_LE2(step); \
        CRC_FUNC_PRE_LE2(step)

CRC_FUNC_PRE_LE2

#define CRC_FUNC_PRE_LE2

(

step

)

Value:

UInt32 Z7_FASTCALL CrcUpdateT ## step (UInt32 v, const void *data, size_t size, const UInt32 *table)

CRC_UPDATE_BYTE_2

#define CRC_UPDATE_BYTE_2	(		crc,
			b )

Value:

(table[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))

CRC_UPDATE_BYTE_2_BE

#define CRC_UPDATE_BYTE_2_BE	(		crc,
			b )

Value:

(table[((crc) >> 24) ^ (b)] ^ ((crc) << 8))

Q [1/2]

#define Q	(		n,
			d )

Value:

    ( (table + ((n) * 4 + 3) * 0x100)[(Byte)(d)] \
    ^ (table + ((n) * 4 + 2) * 0x100)[((d) >> 1 * 8) & 0xFF] \
    ^ (table + ((n) * 4 + 1) * 0x100)[((d) >> 2 * 8) & 0xFF] \
    ^ (table + ((n) * 4 + 0) * 0x100)[((d) >> 3 * 8)] )

Q [2/2]

#define Q	(		n,
			d )

Value:

    ( (table + ((n) * 4 + 0) * 0x100)[((d)) & 0xFF] \
    ^ (table + ((n) * 4 + 1) * 0x100)[((d) >> 1 * 8) & 0xFF] \
    ^ (table + ((n) * 4 + 2) * 0x100)[((d) >> 2 * 8) & 0xFF] \
    ^ (table + ((n) * 4 + 3) * 0x100)[((d) >> 3 * 8)] )

R [1/2]

#define R

(

a

)

Value:

*((const UInt32 *)(const void *)p + (a))

R [2/2]

#define R

(

a

)

Value:

*((const UInt32 *)(const void *)p + (a))

U [1/2]

#define U

(

r

)

Value:

U2(r, ^=)

U [2/2]

#define U

(

r

)

Value:

U2(r, ^=)

U2 [1/2]

#define U2	(		r,
			op )

Value:

        { d = R(r);  x op Q(Z7_CRC_NUM_TABLES_USE / 4 - 1 - (r), d); }

U2 [2/2]

#define U2	(		r,
			op )

Value:

        { d = R(r);  x op Q(Z7_CRC_NUM_TABLES_USE / 4 - 1 - (r), d); }

Z7_CRC_NUM_TABLES_USE

#define Z7_CRC_NUM_TABLES_USE   12

Function Documentation

CRC_FUNC_PRE_BE()

CRC_FUNC_PRE_BE

(

Z7_CRC_NUM_TABLES_USE

)

CRC_FUNC_PRE_LE()

CRC_FUNC_PRE_LE

(

Z7_CRC_NUM_TABLES_USE

)