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path: root/test/math/ilogb.c
blob: 041e66b0ef6794a11a4c5c11c0a99544a38b7a85 (plain)
 ```1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 ``` ``````#include #include #include #include #include #include #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 nan_value = 0.0; int errors = 0; int main(void) { nan_value /= nan_value; check_i1(ilogb, 0.0, FP_ILOGB0); check_i1(ilogb, HUGE_VAL, INT_MAX); check_i1(ilogb, nan_value, FP_ILOGBNAN); check_i1(ilogbf, 0.0, FP_ILOGB0); check_i1(ilogbf, HUGE_VALF, INT_MAX); check_i1(ilogbf, nan_value, FP_ILOGBNAN); printf("Errors: %d\n", errors); return errors; } ``````