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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 UINT16_H |
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#define UINT16_H |
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#include <inttypes.h> // uint16_t, int16_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 uint16_t uint16; |
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typedef int16_t int16; |
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#if (defined(__i386__) || defined(__x86_64__)) && !defined(NO_UINT16_MACROS) |
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static inline void uint16_pack(char* out,uint16 in) { |
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*(uint16*)out=in; |
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} |
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static inline void uint16_unpack(const char *in,uint16* out) { |
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*out=*(const uint16*)in; |
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} |
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static inline uint16 uint16_read(const char* in) { |
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return *(const uint16*)in; |
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} |
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#if defined(__x86_64__) && defined(__GNUC__) |
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static inline void uint16_pack_big(char* out,uint16 in) { |
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*(uint16*)out=__builtin_bswap16(in); |
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} |
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static inline void uint16_unpack_big(const char *in,uint16* out) { |
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*out=__builtin_bswap16(*(const uint16*)in); |
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} |
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static inline uint16 uint16_read_big(const char* in) { |
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return __builtin_bswap16(*(const uint16*)in); |
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} |
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#else |
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void uint16_pack_big(char *out,uint16 in); |
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void uint16_unpack_big(const char *in,uint16* out); |
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uint16 uint16_read_big(const char *in); |
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#endif |
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#else |
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void uint16_pack(char *out,uint16 in); |
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void uint16_pack_big(char *out,uint16 in); |
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void uint16_unpack(const char *in,uint16* out); |
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void uint16_unpack_big(const char *in,uint16* out); |
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uint16 uint16_read(const char *in); |
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uint16 uint16_read_big(const char *in); |
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#endif |
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static inline size_t fmt_uint16(char* out, uint16 in) { |
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if (out) uint16_pack(out,in); |
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return 2; |
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} |
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static inline size_t fmt_uint16_big(char* out, uint16 in) { |
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if (out) uint16_pack_big(out,in); |
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return 2; |
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} |
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static inline size_t scan_uint16(const char* in, size_t len, uint16_t* b) { |
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if (len<2) return 0; |
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*b = uint16_read(in); |
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return 2; |
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} |
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static inline size_t scan_uint16_big(const char* in, size_t len, uint16_t* b) { |
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if (len<2) return 0; |
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*b = uint16_read_big(in); |
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return 2; |
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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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