#define _BSD_SOURCE 1

#define _XOPEN_SOURCE 700

#include <stdint.h>

#include <stdio.h>

#include "mtest.h"

static struct l_li t[] = {

#if LDBL_MANT_DIG == 53

#include "sanity/lgamma.h"

#include "special/lgamma.h"

#elif LDBL_MANT_DIG == 64

#include "sanity/lgammal.h"

#include "special/lgammal.h"

#endif

};

int main(void)

{

	#pragma STDC FENV_ACCESS ON

	int yi;

	long double y;

	float d;

	int e, i, err = 0;

	struct l_li *p;

	for (i = 0; i < sizeof t/sizeof *t; i++) {

		p = t + i;

		if (p->r < 0)

			continue;

		fesetround(p->r);

		feclearexcept(FE_ALL_EXCEPT);

		y = lgammal(p->x);

		yi = signgam;

		e = fetestexcept(INEXACT|INVALID|DIVBYZERO|UNDERFLOW|OVERFLOW);

		if (!checkexcept(e, p->e, p->r)) {

			printf("%s:%d: bad fp exception: %s lgammal(%La)=%La,%lld, want %s",

				p->file, p->line, rstr(p->r), p->x, p->y, p->i, estr(p->e));

			printf(" got %s\n", estr(e));

			err++;

		}

		d = ulperrl(y, p->y, p->dy);

		// TODO: 2 ulp errors allowed

		if ((p->r==RN && fabs(d) > 2) || (!isnan(p->x) && p->x!=-inf && !(p->e&DIVBYZERO) && yi != p->i)) {

			printf("%s:%d: %s lgammal(%La) want %La,%lld got %La,%d ulperr %.3f = %a + %a\n",

				p->file, p->line, rstr(p->r), p->x, p->y, p->i, y, yi, d, d-p->dy, p->dy);

			err++;

		}

	}

	return !!err;

}