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#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 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;
}
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