1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/*! \file crcXXgen.h
* Osmocom generic CRC routines (for max XX bits poly) header. */
/*
* Copyright (C) 2011 Sylvain Munaut <tnt@246tNt.com>
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
/*! \addtogroup crcgen
* @{
* \file crcXXgen.h.tpl */
#include <stdint.h>
#include <osmocom/core/bits.h>
/*! structure describing a given CRC code of max XX bits */
struct osmo_crcXXgen_code {
int bits; /*!< Actual number of bits of the CRC */
uintXX_t poly; /*!< Polynom (normal representation, MSB omitted */
uintXX_t init; /*!< Initialization value of the CRC state */
uintXX_t remainder; /*!< Remainder of the CRC (final XOR) */
};
uintXX_t osmo_crcXXgen_compute_bits(const struct osmo_crcXXgen_code *code,
const ubit_t *in, int len);
int osmo_crcXXgen_check_bits(const struct osmo_crcXXgen_code *code,
const ubit_t *in, int len, const ubit_t *crc_bits);
void osmo_crcXXgen_set_bits(const struct osmo_crcXXgen_code *code,
const ubit_t *in, int len, ubit_t *crc_bits);
/*! @} */
/* vim: set syntax=c: */
|
