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[checksum] additional cleanup

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This commit is contained in:
Pete Batard 2016-03-03 14:58:49 +00:00
parent 00ffbae61f
commit 0313e5ca54
3 changed files with 60 additions and 59 deletions
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11
src/missing.h
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@ -52,6 +52,7 @@
#define PREFETCH64(m) do { _m_prefetch(m); _m_prefetch(m+32); } while(0)
#endif
/* Read/write with endianness swap */
#if defined (_MSC_VER) && (_MSC_VER >= 1300)
#include <stdlib.h>
#pragma intrinsic(_byteswap_ushort)
@ -60,15 +61,17 @@
#define bswap_uint64 _byteswap_uint64
#define bswap_uint32 _byteswap_ulong
#define bswap_uint16 _byteswap_ushort
#define get_be32(p) bswap_uint32(*(const uint32_t *)(const uint8_t *)(p))
#define get_be64(p) bswap_uint64(*(const uint64_t *)(const uint8_t *)(p))
#elif defined (__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3)))
#define bswap_uint64 __builtin_bswap64
#define bswap_uint32 __builtin_bswap32
#define bswap_uint16 __builtin_bswap16
#define get_be32(p) bswap_uint32(*(const uint32_t *)(const uint8_t *)(p))
#define get_be64(p) bswap_uint64(*(const uint32_t *)(const uint8_t *)(p))
#endif
#define read_swap16(p) bswap_uint16(*(const uint16_t*)(const uint8_t*)(p))
#define read_swap32(p) bswap_uint32(*(const uint32_t*)(const uint8_t*)(p))
#define read_swap64(p) bswap_uint64(*(const uint64_t*)(const uint8_t*)(p))
#define write_swap16(p,v) (*(uint16_t*)(void*)(p)) = bswap_uint16(v)
#define write_swap32(p,v) (*(uint32_t*)(void*)(p)) = bswap_uint32(v)
#define write_swap64(p,v) (*(uint32_t*)(void*)(p)) = bswap_uint64(v)
/*
* Nibbled from https://github.com/hanji/popcnt/blob/master/populationcount.cpp