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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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