libosmocore 0.9.6-23.20170220git32ee5af8.fc42
Osmocom core library
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crc64gen.h
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1/*
2 * crc64gen.h
3 *
4 * Copyright (C) 2011 Sylvain Munaut <tnt@246tNt.com>
5 *
6 * All Rights Reserved
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 */
22
23#pragma once
24
34#include <stdint.h>
35#include <osmocom/core/bits.h>
36
37
40 int bits;
41 uint64_t poly;
42 uint64_t init;
43 uint64_t remainder;
44};
45
46uint64_t osmo_crc64gen_compute_bits(const struct osmo_crc64gen_code *code,
47 const ubit_t *in, int len);
48int osmo_crc64gen_check_bits(const struct osmo_crc64gen_code *code,
49 const ubit_t *in, int len, const ubit_t *crc_bits);
50void osmo_crc64gen_set_bits(const struct osmo_crc64gen_code *code,
51 const ubit_t *in, int len, ubit_t *crc_bits);
52
53
56/* vim: set syntax=c: */
Osmocom bit level support code.
uint8_t ubit_t
unpacked bit (0 or 1)
Definition bits.h:23
void osmo_crc64gen_set_bits(const struct osmo_crc64gen_code *code, const ubit_t *in, int len, ubit_t *crc_bits)
Computes and writes the CRC value of a given array of bits.
Definition crc64gen.c:106
int osmo_crc64gen_check_bits(const struct osmo_crc64gen_code *code, const ubit_t *in, int len, const ubit_t *crc_bits)
Checks the CRC value of a given array of hard-bits.
Definition crc64gen.c:81
uint64_t osmo_crc64gen_compute_bits(const struct osmo_crc64gen_code *code, const ubit_t *in, int len)
Compute the CRC value of a given array of hard-bits.
Definition crc64gen.c:46
structure describing a given CRC code of max 64 bits
Definition crc64gen.h:39
uint64_t remainder
Remainder of the CRC (final XOR)
Definition crc64gen.h:43
int bits
Actual number of bits of the CRC.
Definition crc64gen.h:40
uint64_t init
Initialization value of the CRC state.
Definition crc64gen.h:42
uint64_t poly
Polynom (normal representation, MSB omitted.
Definition crc64gen.h:41