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#ifndef __CRC32_H__
#define __CRC32_H__
#ifndef _ANSI_ARGS_
#ifdef PROTOTYPES
#define _ANSI_ARGS_(c) c
#else
#define _ANSI_ARGS_(c) ()
#endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef unsigned long crc32_t;
#define Z_NULL 0
crc32_t crc32 _ANSI_ARGS_((crc32_t crc, const unsigned char *buf, unsigned int len));
/*
Update a running crc with the bytes buf[0..len-1] and return the updated
crc. If buf is NULL, this function returns the required initial value
for the crc. Pre- and post-conditioning (one's complement) is performed
within this function so it shouldn't be done by the application.
Usage example:
uLong crc = crc32(0L, Z_NULL, 0);
while (read_buffer(buffer, length) != EOF) {
crc = crc32(crc, buffer, length);
}
if (crc != original_crc) error();
*/
#ifdef __cplusplus
}
#endif
#endif
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