#include #include #include #include int main(int argc, char *argv[]) { int i; union {float f; uint32_t i;} f; union {double f; uint64_t i;} d; union {long double f; struct {uint64_t m; uint16_t se;} i;} ld; char *eptr; for (i = 1; i < argc; i++) { errno = 0; f.f = strtof(argv[i], &eptr); printf("0x%08x (*eptr:%d errno:%d)\n", f.i, *eptr, errno); errno = 0; d.f = strtod(argv[i], &eptr); printf("0x%08x %08x (*eptr:%d errno:%d)\n", (unsigned)(d.i>>32), (unsigned)d.i, *eptr, errno); errno = 0; ld.f = strtold(argv[i], &eptr); printf("0x%04x %08x %08x (*eptr:%d errno:%d)\n", ld.i.se, (unsigned)(ld.i.m>>32), (unsigned)ld.i.m, *eptr, errno); } return 0; }