#include <math.h> #include <float.h> #include <stdlib.h> #include <stdint.h> #include <limits.h> #include <stdio.h> #define check_d1(func, param, expected) \ do { \ int err; hex_union ur; hex_union up; \ double result = func(param); up.f = param; ur.f = result; \ errors += (err = (result != (expected))); \ err \ ? printf("FAIL: %s(%g/"HEXFMT")=%g/"HEXFMT" (expected %g)\n", \ #func, (double)(param), (long long)up.hex, result, (long long)ur.hex, (double)(expected)) \ : printf("PASS: %s(%g)=%g\n", #func, (double)(param), result); \ } while (0) #define check_i1(func, param, expected) \ do { \ int err; hex_union up; \ long long result = func(param); up.f = param; \ errors += (err = (result != (expected))); \ err \ ? printf("FAIL: %s(%g/"HEXFMT")=%lld/%llu (expected %llu)\n", \ #func, (double)(param), (long long)up.hex, result, result, (long long)(expected)) \ : printf("PASS: %s(%g)=%lld/%llu\n", #func, (double)(param), result, result); \ } while (0) #define HEXFMT "%08llx" typedef union { double f; uint64_t hex; } hex_union; double zero = 0.0; double minus_zero = 0.0; double nan_value = 0.0; int errors = 0; int main(void) { nan_value /= nan_value; minus_zero = copysign(zero, -1.0); check_i1(isfinite, 1.0, 1); check_i1(isfinite, 2.0, 1); check_i1(isfinite, 3.0, 1); check_i1(isfinite, DBL_MAX, 1); check_i1(isfinite, FLT_MAX, 1); check_i1(isfinite, HUGE_VAL, 0); check_i1(isfinite, HUGE_VALF, 0); check_i1(isfinite, HUGE_VALL, 0); check_i1(isfinite, nan_value, 0); check_i1(isfinite, nan_value, 0); check_i1(isfinite, nan_value, 0); check_i1(isnan, 1.0, 0); check_i1(isnan, 2.0, 0); check_i1(isnan, 3.0, 0); check_i1(isnan, DBL_MAX, 0); check_i1(isnan, FLT_MAX, 0); check_i1(isnan, HUGE_VAL, 0); check_i1(isnan, HUGE_VALF, 0); check_i1(isnan, HUGE_VALL, 0); check_i1(isnan, (float)HUGE_VALL, 0); check_i1(isnan, nan_value, 1); check_i1(isnan, nan_value, 1); check_i1(isnan, nan_value, 1); check_i1(isinf, 1.0, 0); check_i1(isinf, 2.0, 0); check_i1(isinf, 3.0, 0); check_i1(isinf, DBL_MAX, 0); check_i1(isinf, FLT_MAX, 0); check_i1(isinf, (float)DBL_MAX, 1); check_i1(isinf, HUGE_VAL, 1); check_i1(isinf, HUGE_VALF, 1); check_i1(isinf, HUGE_VALL, 1); check_i1(isinf, (float)HUGE_VALL, 1); check_i1(isinf, nan_value, 0); check_i1(isinf, nan_value, 0); check_i1(isinf, nan_value, 0); check_i1(fpclassify, minus_zero, FP_ZERO); check_i1(fpclassify, 0.0, FP_ZERO); check_i1(fpclassify, 1.0, FP_NORMAL); check_i1(fpclassify, 2.0, FP_NORMAL); check_i1(fpclassify, 3.0, FP_NORMAL); check_i1(fpclassify, DBL_MIN/1.01, FP_SUBNORMAL); check_i1(fpclassify, DBL_MIN, FP_NORMAL); check_i1(fpclassify, DBL_MAX, FP_NORMAL); check_i1(fpclassify, FLT_MAX, FP_NORMAL); check_i1(fpclassify, DBL_MAX, FP_NORMAL); check_i1(fpclassify, DBL_MAX*1.01, FP_INFINITE); check_i1(fpclassify, HUGE_VAL, FP_INFINITE); check_i1(fpclassify, HUGE_VALF, FP_INFINITE); check_i1(fpclassify, HUGE_VALL, FP_INFINITE); check_i1(fpclassify, (float)HUGE_VALL, FP_INFINITE); check_i1(fpclassify, nan_value, FP_NAN); check_i1(fpclassify, nan_value, FP_NAN); check_i1(fpclassify, nan_value, FP_NAN); check_i1(!!signbit, -1.0, 1); check_i1(!!signbit, minus_zero, 1); check_i1(!!signbit, 0.0, 0); check_i1(!!signbit, HUGE_VAL, 0); check_i1(!!signbit, HUGE_VALF, 0); check_i1(!!signbit, HUGE_VALL, 0); check_i1(!!signbit, -HUGE_VAL, 1); check_i1(!!signbit, -HUGE_VALF, 1); check_i1(!!signbit, -HUGE_VALL, 1); printf("Errors: %d\n", errors); return errors; }