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crc

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A library used to calculate CRC checksums for binary data.

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crc c_src nif crc_8.h
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c_src/nif/crc_8.h 

// -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; st-rulers: [132] -*-

// vim: ts=4 sw=4 ft=c++ et



#ifndef CRC_8_H

#define CRC_8_H



#include <stdlib.h>

#include <stdint.h>



#include "crc_nif.h"



#ifdef __cplusplus

extern "C" {

#endif



extern uint8_t crc_8_init(uint8_t seed);

extern uint8_t crc_8_update(uint8_t ctx, const unsigned char *buf, size_t len);

extern uint8_t crc_8_final(uint8_t ctx);

static uint8_t crc_8(uint8_t seed, const unsigned char *buf, size_t len);



inline uint8_t

crc_8(uint8_t seed, const unsigned char *buf, size_t len)

{

    uint8_t ctx;

    ctx = crc_8_init(seed);

    ctx = crc_8_update(ctx, buf, len);

    return crc_8_final(ctx);

}



/* NIF Functions */



extern ERL_NIF_TERM crc_nif_crc_8_2(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);

extern ERL_NIF_TERM crc_nif_crc_8_init_1(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);

extern ERL_NIF_TERM crc_nif_crc_8_update_2(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);

extern ERL_NIF_TERM crc_nif_crc_8_final_1(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);



#ifdef __cplusplus

}

#endif



#endif