147 lines
3.1 KiB
C
147 lines
3.1 KiB
C
#ifndef _SYSENDIAN_H_
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#define _SYSENDIAN_H_
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#include <stdint.h>
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/* Avoid namespace collisions with BSD <sys/endian.h>. */
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#define be16dec libcperciva_be16dec
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#define be16enc libcperciva_be16enc
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#define be32dec libcperciva_be32dec
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#define be32enc libcperciva_be32enc
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#define be64dec libcperciva_be64dec
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#define be64enc libcperciva_be64enc
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#define le16dec libcperciva_le16dec
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#define le16enc libcperciva_le16enc
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#define le32dec libcperciva_le32dec
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#define le32enc libcperciva_le32enc
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#define le64dec libcperciva_le64dec
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#define le64enc libcperciva_le64enc
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static inline uint16_t
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be16dec(const void * pp)
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{
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const uint8_t * p = (uint8_t const *)pp;
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return ((uint16_t)(p[1]) + ((uint16_t)(p[0]) << 8));
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}
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static inline void
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be16enc(void * pp, uint16_t x)
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{
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uint8_t * p = (uint8_t *)pp;
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p[1] = x & 0xff;
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p[0] = (x >> 8) & 0xff;
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}
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static inline uint32_t
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be32dec(const void * pp)
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{
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const uint8_t * p = (uint8_t const *)pp;
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return ((uint32_t)(p[3]) + ((uint32_t)(p[2]) << 8) +
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((uint32_t)(p[1]) << 16) + ((uint32_t)(p[0]) << 24));
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}
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static inline void
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be32enc(void * pp, uint32_t x)
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{
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uint8_t * p = (uint8_t *)pp;
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p[3] = x & 0xff;
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p[2] = (x >> 8) & 0xff;
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p[1] = (x >> 16) & 0xff;
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p[0] = (x >> 24) & 0xff;
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}
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static inline uint64_t
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be64dec(const void * pp)
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{
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const uint8_t * p = (uint8_t const *)pp;
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return ((uint64_t)(p[7]) + ((uint64_t)(p[6]) << 8) +
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((uint64_t)(p[5]) << 16) + ((uint64_t)(p[4]) << 24) +
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((uint64_t)(p[3]) << 32) + ((uint64_t)(p[2]) << 40) +
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((uint64_t)(p[1]) << 48) + ((uint64_t)(p[0]) << 56));
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}
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static inline void
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be64enc(void * pp, uint64_t x)
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{
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uint8_t * p = (uint8_t *)pp;
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p[7] = x & 0xff;
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p[6] = (x >> 8) & 0xff;
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p[5] = (x >> 16) & 0xff;
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p[4] = (x >> 24) & 0xff;
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p[3] = (x >> 32) & 0xff;
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p[2] = (x >> 40) & 0xff;
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p[1] = (x >> 48) & 0xff;
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p[0] = (x >> 56) & 0xff;
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}
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static inline uint16_t
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le16dec(const void * pp)
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{
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const uint8_t * p = (uint8_t const *)pp;
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return ((uint16_t)(p[0]) + ((uint16_t)(p[1]) << 8));
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}
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static inline void
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le16enc(void * pp, uint16_t x)
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{
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uint8_t * p = (uint8_t *)pp;
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p[0] = x & 0xff;
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p[1] = (x >> 8) & 0xff;
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}
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static inline uint32_t
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le32dec(const void * pp)
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{
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const uint8_t * p = (uint8_t const *)pp;
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return ((uint32_t)(p[0]) + ((uint32_t)(p[1]) << 8) +
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((uint32_t)(p[2]) << 16) + ((uint32_t)(p[3]) << 24));
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}
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static inline void
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le32enc(void * pp, uint32_t x)
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{
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uint8_t * p = (uint8_t *)pp;
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p[0] = x & 0xff;
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p[1] = (x >> 8) & 0xff;
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p[2] = (x >> 16) & 0xff;
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p[3] = (x >> 24) & 0xff;
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}
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static inline uint64_t
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le64dec(const void * pp)
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{
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const uint8_t * p = (uint8_t const *)pp;
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return ((uint64_t)(p[0]) + ((uint64_t)(p[1]) << 8) +
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((uint64_t)(p[2]) << 16) + ((uint64_t)(p[3]) << 24) +
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((uint64_t)(p[4]) << 32) + ((uint64_t)(p[5]) << 40) +
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((uint64_t)(p[6]) << 48) + ((uint64_t)(p[7]) << 56));
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}
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static inline void
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le64enc(void * pp, uint64_t x)
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{
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uint8_t * p = (uint8_t *)pp;
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p[0] = x & 0xff;
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p[1] = (x >> 8) & 0xff;
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p[2] = (x >> 16) & 0xff;
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p[3] = (x >> 24) & 0xff;
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p[4] = (x >> 32) & 0xff;
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p[5] = (x >> 40) & 0xff;
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p[6] = (x >> 48) & 0xff;
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p[7] = (x >> 56) & 0xff;
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}
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#endif /* !_SYSENDIAN_H_ */
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