crc32.c File Reference

#include "zutil.h"
#include "crc32.h"

Go to the source code of this file.

Macros
#define	N   5
#define	W   4
#define	POLY   0xedb88320 /* p(x) reflected, with x^32 implied */

Functions
local z_crc_t	multmodp (z_crc_t a, z_crc_t b)
local z_crc_t	x2nmodp (z_off64_t n, unsigned k)
const z_crc_t FAR *ZEXPORT	get_crc_table (void)
unsigned long ZEXPORT	crc32_z (unsigned long crc, const unsigned char FAR *buf, z_size_t len)
unsigned long ZEXPORT	crc32 (unsigned long crc, const unsigned char FAR *buf, uInt len)
uLong ZEXPORT	crc32_combine64 (uLong crc1, uLong crc2, z_off64_t len2)
uLong ZEXPORT	crc32_combine (uLong crc1, uLong crc2, z_off_t len2)
uLong ZEXPORT	crc32_combine_gen64 (z_off64_t len2)
uLong ZEXPORT	crc32_combine_gen (z_off_t len2)
uLong ZEXPORT	crc32_combine_op (uLong crc1, uLong crc2, uLong op)

Macro Definition Documentation

#define N   5

Definition at line 57 of file crc32.c.

Referenced by crc32_z().

#define POLY   0xedb88320 /* p(x) reflected, with x^32 implied */

Definition at line 149 of file crc32.c.

Referenced by multmodp().

#define W   4

Definition at line 85 of file crc32.c.

Referenced by crc32_z().

Function Documentation

unsigned long ZEXPORT crc32	(	unsigned long	crc,
		const unsigned char FAR *	buf,
		uInt	len
	)

Definition at line 1015 of file crc32.c.

References crc32_z().

Referenced by deflate(), deflateResetKeep(), inflate(), read_buf(), unzReadCurrentFile(), and zipWriteInFileInZip().

uLong ZEXPORT crc32_combine	(	uLong	crc1,
		uLong	crc2,
		z_off_t	len2
	)

Definition at line 1029 of file crc32.c.

References crc32_combine64(), and z_off64_t.

uLong ZEXPORT crc32_combine64	(	uLong	crc1,
		uLong	crc2,
		z_off64_t	len2
	)

Definition at line 1021 of file crc32.c.

References multmodp(), and x2nmodp().

Referenced by crc32_combine().

uLong ZEXPORT crc32_combine_gen

(

z_off_t

len2

)

Definition at line 1042 of file crc32.c.

References crc32_combine_gen64(), and z_off64_t.

uLong ZEXPORT crc32_combine_gen64

(

z_off64_t

len2

)

Definition at line 1034 of file crc32.c.

References x2nmodp().

Referenced by crc32_combine_gen().

uLong ZEXPORT crc32_combine_op	(	uLong	crc1,
		uLong	crc2,
		uLong	op
	)

Definition at line 1047 of file crc32.c.

References multmodp().

unsigned long ZEXPORT crc32_z	(	unsigned long	crc,
		const unsigned char FAR *	buf,
		z_size_t	len
	)

Definition at line 694 of file crc32.c.

References crc_table, N, W, and Z_NULL.

Referenced by crc32().

const z_crc_t FAR* ZEXPORT get_crc_table

(

void

)

Definition at line 549 of file crc32.c.

References crc_table, and FAR.

Referenced by unzOpenCurrentFile3(), and zipOpenNewFileInZip4_64().

local z_crc_t multmodp	(	z_crc_t	a,
		z_crc_t	b
	)

Definition at line 155 of file crc32.c.

References POLY.

Referenced by crc32_combine64(), crc32_combine_op(), and x2nmodp().

local z_crc_t x2nmodp	(	z_off64_t	n,
		unsigned	k
	)

Definition at line 176 of file crc32.c.

References multmodp(), and x2n_table.

Referenced by crc32_combine64(), and crc32_combine_gen64().