| /* |
| * crc16gen.h |
| * |
| * 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 crc16gen.h |
| * Osmocom generic CRC routines (for max 16 bits poly) header |
| */ |
| |
| |
| #include <stdint.h> |
| #include <osmocom/core/bits.h> |
| |
| |
| /*! \brief structure describing a given CRC code of max 16 bits */ |
| struct osmo_crc16gen_code { |
| int bits; /*!< \brief Actual number of bits of the CRC */ |
| uint16_t poly; /*!< \brief Polynom (normal representation, MSB omitted */ |
| uint16_t init; /*!< \brief Initialization value of the CRC state */ |
| uint16_t remainder; /*!< \brief Remainder of the CRC (final XOR) */ |
| }; |
| |
| uint16_t osmo_crc16gen_compute_bits(const struct osmo_crc16gen_code *code, |
| const ubit_t *in, int len); |
| int osmo_crc16gen_check_bits(const struct osmo_crc16gen_code *code, |
| const ubit_t *in, int len, const ubit_t *crc_bits); |
| void osmo_crc16gen_set_bits(const struct osmo_crc16gen_code *code, |
| const ubit_t *in, int len, ubit_t *crc_bits); |
| |
| |
| /*! @} */ |
| |
| /* vim: set syntax=c: */ |