#include <stdio.h>

#include <math.h>

#define T(a,b) {__LINE__, a, b},

#define length(a) (sizeof(a)/sizeof*(a))

static struct {

	int line;

	float f;

	int class;

} tf[] = {

	T(0.0/0.0, FP_NAN)

	T(-0.0/0.0, FP_NAN)

	T(1/0.0, FP_INFINITE)

	T(-1/0.0, FP_INFINITE)

	T(0x1.ffffp127, FP_NORMAL)

	T(-0x1.ffffp127, FP_NORMAL)

	T(0x1p-127, FP_SUBNORMAL)

	T(-0x1p-127, FP_SUBNORMAL)

	T(0.0, FP_ZERO)

	T(-0.0, FP_ZERO)

	T(3.14, FP_NORMAL)

	T(-42, FP_NORMAL)

};

static struct {

	int line;

	double f;

	int class;

} td[] = {

	T(0.0/0.0, FP_NAN)

	T(-0.0/0.0, FP_NAN)

	T(1/0.0, FP_INFINITE)

	T(-1/0.0, FP_INFINITE)

	T(0x1.ffffp1023, FP_NORMAL)

	T(-0x1.ffffp1023, FP_NORMAL)

	T(0x1p-1023, FP_SUBNORMAL)

	T(-0x1p-1023, FP_SUBNORMAL)

	T(0.0, FP_ZERO)

	T(-0.0, FP_ZERO)

	T(3.14, FP_NORMAL)

	T(-42, FP_NORMAL)

};

static struct {

	int line;

	long double f;

	int class;

} tl[] = {

	T(0.0/0.0, FP_NAN)

	T(-0.0/0.0, FP_NAN)

	T(1/0.0, FP_INFINITE)

	T(-1/0.0, FP_INFINITE)

#if LDBL_MAX_EXP==16384

	T(0x1.ffffp16383L, FP_NORMAL)

	T(-0x1.ffffp16383L, FP_NORMAL)

	T(0x1p-16383L, FP_SUBNORMAL)

	T(-0x1p-16383L, FP_SUBNORMAL)

#elif LDBL_MAX_EXP==1024

	T(0x1.ffffp1023L, FP_NORMAL)

	T(-0x1.ffffp1023L, FP_NORMAL)

	T(0x1p-1023L, FP_SUBNORMAL)

	T(-0x1p-1023L, FP_SUBNORMAL)

#endif

	T(0.0, FP_ZERO)

	T(-0.0, FP_ZERO)

	T(3.14, FP_NORMAL)

	T(-42, FP_NORMAL)

};

static char *strclass(int c)

{

#define C(n) case n: return #n;

	switch (c) {

	C(FP_NAN)

	C(FP_INFINITE)

	C(FP_ZERO)

	C(FP_SUBNORMAL)

	C(FP_NORMAL)

	}

	return "invalid";

}

#define error(t,c) err++, printf("%s:%d: (at line %d) %La has class %d (%s), but %s returns %d\n", \

	__FILE__, __LINE__, t.line, (long double)t.f, t.class, strclass(t.class), #c, c(t.f))

int main()

{

	int i;

	int err = 0;

	for (i = 0; i < length(tf); i++) {

		if (fpclassify(tf[i].f) != tf[i].class)

			error(tf[i], fpclassify);

		if (!!isinf(tf[i].f) != (tf[i].class == FP_INFINITE))

			error(tf[i], isinf);

		if (!!isnan(tf[i].f) != (tf[i].class == FP_NAN))

			error(tf[i], isnan);

		if (!!isnormal(tf[i].f) != (tf[i].class == FP_NORMAL))

			error(tf[i], isnormal);

		if (!!isfinite(tf[i].f) != (tf[i].class > FP_INFINITE))

			error(tf[i], isfinite);

	}

	for (i = 0; i < length(td); i++) {

		if (fpclassify(td[i].f) != td[i].class)

			error(td[i], fpclassify);

		if (!!isinf(td[i].f) != (td[i].class == FP_INFINITE))

			error(td[i], isinf);

		if (!!isnan(td[i].f) != (td[i].class == FP_NAN))

			error(td[i], isnan);

		if (!!isnormal(td[i].f) != (td[i].class == FP_NORMAL))

			error(td[i], isnormal);

		if (!!isfinite(td[i].f) != (td[i].class > FP_INFINITE))

			error(td[i], isfinite);

	}

	for (i = 0; i < length(tl); i++) {

		if (fpclassify(tl[i].f) != tl[i].class)

			error(tl[i], fpclassify);

		if (!!isinf(tl[i].f) != (tl[i].class == FP_INFINITE))

			error(tl[i], isinf);

		if (!!isnan(tl[i].f) != (tl[i].class == FP_NAN))

			error(tl[i], isnan);

		if (!!isnormal(tl[i].f) != (tl[i].class == FP_NORMAL))

			error(tl[i], isnormal);

		if (!!isfinite(tl[i].f) != (tl[i].class > FP_INFINITE))

			error(tl[i], isfinite);

	}

	return !!err;

}