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| author | Pablo Neira Ayuso <pablo@gnumonks.org> | 2011-04-26 00:28:18 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@gnumonks.org> | 2011-04-26 00:28:18 +0200 |
| commit | f0059596a20bfa406a500ca5d6b34bf88d333ed3 (patch) | |
| tree | 41bc483077171529e20084ede0784dd6af076056 /src/shared/libosmocore/include/osmocom/core/crc16.h | |
| parent | d9639bb010d05a96a6cbced94668c5754a4f0de9 (diff) | |
| parent | 28dbfe9bf7a799ab1da2563fd5e007d007b54168 (diff) | |
Merge commit '28dbfe9bf7a799ab1da2563fd5e007d007b54168'
Diffstat (limited to 'src/shared/libosmocore/include/osmocom/core/crc16.h')
| -rw-r--r-- | src/shared/libosmocore/include/osmocom/core/crc16.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/shared/libosmocore/include/osmocom/core/crc16.h b/src/shared/libosmocore/include/osmocom/core/crc16.h new file mode 100644 index 00000000..7a512490 --- /dev/null +++ b/src/shared/libosmocore/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 */ |