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26 lines
531 B
26 lines
531 B
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* crc-itu-t.h - CRC ITU-T V.41 routine |
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* |
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* Implements the standard CRC ITU-T V.41: |
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* Width 16 |
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* Poly 0x1021 (x^16 + x^12 + x^15 + 1) |
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* Init 0 |
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*/ |
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#ifndef CRC_ITU_T_H |
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#define CRC_ITU_T_H |
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#include <linux/types.h> |
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extern u16 const crc_itu_t_table[256]; |
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extern u16 crc_itu_t(u16 crc, const u8 *buffer, size_t len); |
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static inline u16 crc_itu_t_byte(u16 crc, const u8 data) |
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{ |
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return (crc << 8) ^ crc_itu_t_table[((crc >> 8) ^ data) & 0xff]; |
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} |
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#endif /* CRC_ITU_T_H */ |
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