#include <stdint.h>

#include <stdio.h>

#include "util.h"

static struct ll_l t[] = {

#if LDBL_MANT_DIG == 53

#include "sanity/nexttoward.h"

#elif LDBL_MANT_DIG == 64

#include "sanity/nexttoward.h"

#endif

};

int main(void)

{

	#pragma STDC FENV_ACCESS ON

	long double y;

	float d;

	int e, i, err = 0;

	struct ll_l *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 = nexttoward(p->x, p->x2);

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

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

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

				p->file, p->line, rstr(p->r), p->x, p->x2, p->y, estr(p->e));

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

			err++;

		}

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

		if (!checkcr(y, p->y, p->r)) {

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

				p->file, p->line, rstr(p->r), p->x, p->x2, p->y, y, d, d-p->dy, p->dy);

			err++;

		}

	}

	return !!err;

}