lz_encoder_hash.h File Reference

Hash macros for match finders. More...

#include "check.h"

Go to the source code of this file.

Macros
#define	hash_table   lzma_crc32_table[0]
#define	HASH_2_SIZE   (UINT32_C(1) << 10)
#define	HASH_3_SIZE   (UINT32_C(1) << 16)
#define	HASH_4_SIZE   (UINT32_C(1) << 20)
#define	HASH_2_MASK   (HASH_2_SIZE - 1)
#define	HASH_3_MASK   (HASH_3_SIZE - 1)
#define	HASH_4_MASK   (HASH_4_SIZE - 1)
#define	FIX_3_HASH_SIZE   (HASH_2_SIZE)
#define	FIX_4_HASH_SIZE   (HASH_2_SIZE + HASH_3_SIZE)
#define	FIX_5_HASH_SIZE   (HASH_2_SIZE + HASH_3_SIZE + HASH_4_SIZE)
#define	hash_2_calc()
#define	hash_3_calc()
#define	hash_4_calc()
#define	hash_5_calc()
#define	hash_zip_calc()
#define	mt_hash_2_calc()
#define	mt_hash_3_calc()
#define	mt_hash_4_calc()

Detailed Description

Hash macros for match finders.

Macro Definition Documentation

FIX_3_HASH_SIZE

#define FIX_3_HASH_SIZE   (HASH_2_SIZE)

FIX_4_HASH_SIZE

#define FIX_4_HASH_SIZE   (HASH_2_SIZE + HASH_3_SIZE)

FIX_5_HASH_SIZE

#define FIX_5_HASH_SIZE   (HASH_2_SIZE + HASH_3_SIZE + HASH_4_SIZE)

hash_2_calc

#define hash_2_calc

(

)

Value:

        const uint32_t hash_value \
            = (uint32_t)(cur[0]) | ((uint32_t)(cur[1]) << 8)

HASH_2_MASK

#define HASH_2_MASK   (HASH_2_SIZE - 1)

HASH_2_SIZE

#define HASH_2_SIZE   (UINT32_C(1) << 10)

hash_3_calc

#define hash_3_calc

(

)

Value:

    const uint32_t temp = hash_table[cur[0]] ^ cur[1]; \
    const uint32_t hash_2_value = temp & HASH_2_MASK; \
    const uint32_t hash_value \
            = (temp ^ ((uint32_t)(cur[2]) << 8)) & mf->hash_mask

HASH_3_MASK

#define HASH_3_MASK   (HASH_3_SIZE - 1)

HASH_3_SIZE

#define HASH_3_SIZE   (UINT32_C(1) << 16)

hash_4_calc

#define hash_4_calc

(

)

Value:

    const uint32_t temp = hash_table[cur[0]] ^ cur[1]; \
    const uint32_t hash_2_value = temp & HASH_2_MASK; \
    const uint32_t hash_3_value \
            = (temp ^ ((uint32_t)(cur[2]) << 8)) & HASH_3_MASK; \
    const uint32_t hash_value = (temp ^ ((uint32_t)(cur[2]) << 8) \
            ^ (hash_table[cur[3]] << 5)) & mf->hash_mask

HASH_4_MASK

#define HASH_4_MASK   (HASH_4_SIZE - 1)

HASH_4_SIZE

#define HASH_4_SIZE   (UINT32_C(1) << 20)

hash_5_calc

#define hash_5_calc

(

)

Value:

    const uint32_t temp = hash_table[cur[0]] ^ cur[1]; \
    const uint32_t hash_2_value = temp & HASH_2_MASK; \
    const uint32_t hash_3_value \
            = (temp ^ ((uint32_t)(cur[2]) << 8)) & HASH_3_MASK; \
    uint32_t hash_4_value = (temp ^ ((uint32_t)(cur[2]) << 8) ^ \
            ^ hash_table[cur[3]] << 5); \
    const uint32_t hash_value \
            = (hash_4_value ^ (hash_table[cur[4]] << 3)) \
                & mf->hash_mask; \
    hash_4_value &= HASH_4_MASK

hash_table

#define hash_table   lzma_crc32_table[0]

hash_zip_calc

#define hash_zip_calc

(

)

Value:

    const uint32_t hash_value \
            = (((uint32_t)(cur[2]) | ((uint32_t)(cur[0]) << 8)) \
                ^ hash_table[cur[1]]) & 0xFFFF

mt_hash_2_calc

#define mt_hash_2_calc

(

)

Value:

    const uint32_t hash_2_value \
            = (hash_table[cur[0]] ^ cur[1]) & HASH_2_MASK

mt_hash_3_calc

#define mt_hash_3_calc

(

)

Value:

    const uint32_t temp = hash_table[cur[0]] ^ cur[1]; \
    const uint32_t hash_2_value = temp & HASH_2_MASK; \
    const uint32_t hash_3_value \
            = (temp ^ ((uint32_t)(cur[2]) << 8)) & HASH_3_MASK

mt_hash_4_calc

#define mt_hash_4_calc

(

)

Value:

    const uint32_t temp = hash_table[cur[0]] ^ cur[1]; \
    const uint32_t hash_2_value = temp & HASH_2_MASK; \
    const uint32_t hash_3_value \
            = (temp ^ ((uint32_t)(cur[2]) << 8)) & HASH_3_MASK; \
    const uint32_t hash_4_value = (temp ^ ((uint32_t)(cur[2]) << 8) ^ \
            (hash_table[cur[3]] << 5)) & HASH_4_MASK