From 8a6d48c0542876eb3acfc0970c0ab7872db08d5f Mon Sep 17 00:00:00 2001 From: Zheng Da Date: Sun, 6 Dec 2009 05:26:23 +0100 Subject: check in the original version of dde linux26. --- libdde_linux26/contrib/include/linux/crc-itu-t.h | 28 ++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 libdde_linux26/contrib/include/linux/crc-itu-t.h (limited to 'libdde_linux26/contrib/include/linux/crc-itu-t.h') diff --git a/libdde_linux26/contrib/include/linux/crc-itu-t.h b/libdde_linux26/contrib/include/linux/crc-itu-t.h new file mode 100644 index 00000000..84920f3c --- /dev/null +++ b/libdde_linux26/contrib/include/linux/crc-itu-t.h @@ -0,0 +1,28 @@ +/* + * crc-itu-t.h - CRC ITU-T V.41 routine + * + * Implements the standard CRC ITU-T V.41: + * Width 16 + * Poly 0x0x1021 (x^16 + x^12 + x^15 + 1) + * Init 0 + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ + +#ifndef CRC_ITU_T_H +#define CRC_ITU_T_H + +#include + +extern u16 const crc_itu_t_table[256]; + +extern u16 crc_itu_t(u16 crc, const u8 *buffer, size_t len); + +static inline u16 crc_itu_t_byte(u16 crc, const u8 data) +{ + return (crc << 8) ^ crc_itu_t_table[((crc >> 8) ^ data) & 0xff]; +} + +#endif /* CRC_ITU_T_H */ + -- cgit v1.2.3