#include <stdint.h>

#include <stdio.h>

#include "mtest.h"

static struct d_d t[] = {

#include "crlibm/log2.h"

#include "sanity/log2.h"

#include "special/log2.h"

};

int main(void)

{

	#pragma STDC FENV_ACCESS ON

	double y;

	float d;

	int e, i, err = 0;

	struct d_d *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 = log2(p->x);

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

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

			printf("%s:%d: bad fp exception: %s log2(%a)=%a, want %s",

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

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

			err++;

		}

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

		if (!checkulp(d, p->r)) {

			printf("%s:%d: %s log2(%a) want %a got %a ulperr %.3f = %a + %a\n",

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

			err++;

		}

	}

	return !!err;

}