/* Swap byte-order in 16-bit, 32-bit and 64-bit words */ #ifndef _reverse_#define _reverse_ #define Reverse_short(s) { \ char * _p; \ int _a; \ _p = (char *) (s); \ _a = _p[0]; \ _p[0] = _p[1]; \ _p[1] = _a; \} #define Reverse_int32(w) { \ char * _p; \ int _a; \ _p = (char *) (w); \ _a = _p[0]; \ _p[0] = _p[3]; \ _p[3] = _a; \ _a = _p[1]; \ _p[1] = _p[2]; \ _p[2] = _a; \} #define Reverse_int64(d) { \ char * _p; \ int _a; \ _p = (char *) (d); \ _a = _p[0]; \ _p[0] = _p[7]; \ _p[7] = _a; \ _a = _p[1]; \ _p[1] = _p[6]; \ _p[6] = _a; \ _a = _p[2]; \ _p[2] = _p[5]; \ _p[5] = _a; \ _a = _p[3]; \ _p[3] = _p[4]; \ _p[4] = _a; \} #ifdef SIXTYFOUR#define Reverse_word Reverse_int64#else#define Reverse_word Reverse_int32#endif #define Reverse_double Reverse_int64 #endif /* _reverse_ */