#include <stdio.h>
#include <math.h>
#include <float.h>

#define classification(x) (fpclassify(x) == FP_INFINITE  ? "Inf"        : \
                           fpclassify(x) == FP_NAN       ? "NaN"        : \
                           fpclassify(x) == FP_NORMAL    ? "normal"     : \
                           fpclassify(x) == FP_SUBNORMAL ? "sub-normal" : \
                           fpclassify(x) == FP_ZERO      ? "zero"       : \
                                                           "unknown")

#define MYPRINT(fmt, exp) { printf("%s: " fmt "\n", #exp, (exp)); }

int main()
{
    MYPRINT("%s", classification(1.0));
    MYPRINT("%d", signbit(1.0));
    MYPRINT("%s", classification(0.0));
    MYPRINT("%d", signbit(0.0));
    MYPRINT("%d", isnan(0.0));
    MYPRINT("%s", classification(-0.0));
    MYPRINT("%d", signbit(-0.0));
    MYPRINT("%s", classification(-0.0/10));
    MYPRINT("%d", signbit(-0.0/10));
    MYPRINT("%s", classification(1.0/0.0));
    MYPRINT("%d", signbit(1.0/0.0));
    MYPRINT("%d", isnan(1.0/0.0));
    MYPRINT("%s", classification(-1.0/0.0));
    MYPRINT("%d", signbit(-1.0/0.0));
    MYPRINT("%s", classification(0.0/0.0));
    MYPRINT("%d", isnan(0.0/0.0));
    MYPRINT("%s", classification(DBL_MAX));
    MYPRINT("%s", classification(DBL_MAX*2));
    MYPRINT("%s", classification(DBL_MIN));
    MYPRINT("%s", classification(DBL_MIN/2));
    MYPRINT("%s", classification(FLT_MIN/2));
    MYPRINT("%s", classification(FLT_MIN/2.0));
    return 0;
}