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39 lines
898 B
C
39 lines
898 B
C
//-----------------------------------------------------------------------------
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Generic CRC calculation code.
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//-----------------------------------------------------------------------------
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#ifndef __PARITY_H
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#define __PARITY_H
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#include <stdint.h>
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extern const uint8_t OddByteParity[256];
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static inline uint8_t oddparity8(uint8_t bt)
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{
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return OddByteParity[bt];
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}
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extern const uint8_t EvenByteParity[256];
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static inline uint8_t evenparity8(const uint8_t bt)
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{
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return EvenByteParity[bt];
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}
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static inline uint32_t evenparity32(uint32_t x)
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{
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x ^= x >> 16;
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x ^= x >> 8;
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return EvenByteParity[x & 0xff];
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}
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#endif /* __PARITY_H */
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