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1 | /* |
2 | * crc-itu-t.h - CRC ITU-T V.41 routine |
3 | * |
4 | * Implements the standard CRC ITU-T V.41: |
5 | * Width 16 |
6 | * Poly 0x0x1021 (x^16 + x^12 + x^15 + 1) |
7 | * Init 0 |
8 | * |
9 | * This source code is licensed under the GNU General Public License, |
10 | * Version 2. See the file COPYING for more details. |
11 | */ |
12 | |
13 | #ifndef CRC_ITU_T_H |
14 | #define CRC_ITU_T_H |
15 | |
16 | #include <linux/types.h> |
17 | |
18 | extern u16 const crc_itu_t_table[256]; |
19 | |
20 | extern u16 crc_itu_t(u16 crc, const u8 *buffer, size_t len); |
21 | |
22 | static inline u16 crc_itu_t_byte(u16 crc, const u8 data) |
23 | { |
24 | return (crc << 8) ^ crc_itu_t_table[((crc >> 8) ^ data) & 0xff]; |
25 | } |
26 | |
27 | #endif /* CRC_ITU_T_H */ |
28 | |
29 |
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od-2011-09-04
od-2011-09-18
v2.6.34-rc5
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