#ifndef CRC32C_H

#define CRC32C_H

// crc32c.h -- header for crc32c.c

// Copyright (C) 2015 Mark Adler

// See crc32c.c for the license.

#include <stdint.h>

// Return the CRC-32C of buf[0..len-1] given the starting CRC crc. This can be

// used to calculate the CRC of a sequence of bytes a chunk at a time, using

// the previously returned crc in the next call. The first call must be with

// crc == 0. crc32c() uses the Intel crc32 hardware instruction if available.

typedef uint32_t (*crc_func)(uint32_t crc, const void *buf, size_t len);

extern crc_func crc32c;

void crc32c_init(void);

// Expose a prototype for the crc32c software variant simply for testing purposes

uint32_t crc32c_sw(uint32_t crc, void const *buf, size_t len);

#endif /* CRC32C_H */