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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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