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88 lines
1.9 KiB
88 lines
1.9 KiB
/* this header file comes from libowfat, http://www.fefe.de/libowfat/ */ |
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#ifndef UINT32_H |
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#define UINT32_H |
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#include <inttypes.h> // uint32_t, int32_t |
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#include <stddef.h> // size_t |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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typedef uint32_t uint32; |
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typedef int32_t int32; |
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#if (defined(__i386__) || defined(__x86_64__)) && !defined(NO_UINT32_MACROS) |
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static inline void uint32_pack(char* out,uint32 in) { |
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*(uint32*)out=in; |
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} |
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static inline void uint32_unpack(const char *in,uint32* out) { |
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*out=*(const uint32*)in; |
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} |
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static inline uint32 uint32_read(const char* in) { |
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return *(const uint32*)in; |
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} |
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#if defined(__x86_64__) && defined(__GNUC__) |
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static inline void uint32_pack_big(char *out,uint32 in) { |
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*(uint32*)out=__builtin_bswap32(in); |
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} |
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static inline void uint32_unpack_big(const char *in,uint32* out) { |
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*out=__builtin_bswap32(*(const uint32*)in); |
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} |
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static inline uint32 uint32_read_big(const char *in) { |
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return __builtin_bswap32(*(const uint32*)in); |
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} |
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#else |
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void uint32_pack_big(char *out,uint32 in); |
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void uint32_unpack_big(const char *in,uint32* out); |
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uint32 uint32_read_big(const char *in); |
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#endif |
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#else |
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void uint32_pack(char *out,uint32 in); |
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void uint32_pack_big(char *out,uint32 in); |
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void uint32_unpack(const char *in,uint32* out); |
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void uint32_unpack_big(const char *in,uint32* out); |
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uint32 uint32_read(const char *in); |
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uint32 uint32_read_big(const char *in); |
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#endif |
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static inline size_t fmt_uint32(char* out, uint32 in) { |
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if (out) uint32_pack(out,in); |
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return 4; |
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} |
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static inline size_t fmt_uint32_big(char* out, uint32 in) { |
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if (out) uint32_pack_big(out,in); |
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return 4; |
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} |
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static inline size_t scan_uint32(const char* in, size_t len, uint32_t* b) { |
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if (len<4) return 0; |
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*b = uint32_read(in); |
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return 4; |
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} |
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static inline size_t scan_uint32_big(const char* in, size_t len, uint32_t* b) { |
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if (len<4) return 0; |
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*b = uint32_read_big(in); |
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return 4; |
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} |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif
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