diff options
| author | Pablo Neira Ayuso <pablo@gnumonks.org> | 2011-03-22 16:36:13 +0100 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2011-03-23 18:09:28 +0100 |
| commit | 834193484439acd6056a891e9b2df5992a370088 (patch) | |
| tree | e31e73e1364119617416273610f7b851c89d25c4 /include/osmocom/core/crc16.h | |
| parent | fba495e5f6084800c076e0ecae990ed9e6483530 (diff) | |
include: reorganize headers file to include/osmocom/[gsm|core]0.2.0
This patch moves all GSM-specific definitions to include/osmocom/gsm.
Moreover, the headers in include/osmocore/ have been moved to
include/osmocom/core.
This has been proposed by Harald Welte and Sylvain Munaunt.
Tested with `make distcheck'.
Signed-off-by: Pablo Neira Ayuso <pablo@gnumonks.org>
Diffstat (limited to 'include/osmocom/core/crc16.h')
| -rw-r--r-- | include/osmocom/core/crc16.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/osmocom/core/crc16.h b/include/osmocom/core/crc16.h new file mode 100644 index 00000000..7a512490 --- /dev/null +++ b/include/osmocom/core/crc16.h @@ -0,0 +1,34 @@ +/* + * This was copied from the linux kernel and adjusted for our types. + */ +/* + * crc16.h - CRC-16 routine + * + * Implements the standard CRC-16: + * Width 16 + * Poly 0x8005 (x^16 + x^15 + x^2 + 1) + * Init 0 + * + * Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com> + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ + +#ifndef __CRC16_H +#define __CRC16_H + +#include <stdint.h> + +#include <sys/types.h> + +extern uint16_t const crc16_table[256]; + +extern uint16_t crc16(uint16_t crc, const uint8_t *buffer, size_t len); + +static inline uint16_t crc16_byte(uint16_t crc, const uint8_t data) +{ + return (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff]; +} + +#endif /* __CRC16_H */ |