blob: 95f92af9131b1b0d97369378e5a6d701a1b87ed1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
/* crc32_chorba_p.h -- crc32 chorba interface
* Copyright (C) 2021 Nathan Moinvaziri
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#ifndef CRC32_CHORBA_P_H_
#define CRC32_CHORBA_P_H_
#include "zendian.h"
/* Size thresholds for Chorba algorithm variants */
#define CHORBA_LARGE_THRESHOLD (sizeof(chorba_word_t) * 64 * 1024)
#define CHORBA_MEDIUM_UPPER_THRESHOLD 32768
#define CHORBA_MEDIUM_LOWER_THRESHOLD 8192
#define CHORBA_SMALL_THRESHOLD_64BIT 72
#ifdef ARCH_64BIT
# define CHORBA_SMALL_THRESHOLD 72
# define CHORBA_W 8
# define CHORBA_WORD_FROM_LE(word) Z_U64_FROM_LE(word)
typedef uint64_t chorba_word_t;
#else
# define CHORBA_SMALL_THRESHOLD 80
# define CHORBA_W 4
# define CHORBA_WORD_FROM_LE(word) Z_U32_FROM_LE(word)
typedef uint32_t chorba_word_t;
#endif
Z_INTERNAL uint32_t crc32_chorba_118960_nondestructive(uint32_t crc, const uint8_t *buf, size_t len);
Z_INTERNAL uint32_t crc32_chorba_32768_nondestructive(uint32_t crc, const uint8_t *buf, size_t len);
Z_INTERNAL uint32_t crc32_chorba_small_nondestructive(uint32_t crc, const uint8_t *buf, size_t len);
Z_INTERNAL uint32_t crc32_chorba_small_nondestructive_32bit(uint32_t crc, const uint8_t *buf, size_t len);
#endif /* CRC32_CHORBA_P_H_ */
|
