#include "test.h"

#include <math.h>

#include <stdint.h>

#include <fenv.h>

#include <stdio.h>

#include <float.h>

static struct {

	double x;

	int n;

	double y;

} t[] = {

	0.0, 0, 0.0,

	-0.0, 0, -0.0,

	0.0, -1234567, 0.0,

	-0.0, 1234567, -0.0,

	0x1.234p0, 13, 0x1.234p13,

	0x1.234p0, -13, 0x1.234p-13,

	-0x1.234p1, 137, -0x1.234p138,

	-0x1.234p1, -137, -0x1.234p-136,

	0x1.234p1023, 1, INFINITY,

	0x1.234p1023, -1022, 0x1.234p1,

	0x1.234p1023, -1023, 0x1.234p0,

	0x1.234p1023, -1024, 0x1.234p-1,

	0x1.234p1023, -2023, 0x1.234p-1000,

	0x1.234p1023, -2045, 0x1.234p-1022,

	0x1.234p1023, -2046, 0x1.234p-1023,

	0x1.234p1023, -2048, 0x1.234p-1025,

	0x1.234p1023, -2049, 0x1.234p-1026,

	0x1p1023, -2096, 0x1p-1073,

	0x1p1023, -2097, 0x1p-1074,

	0x1p1023, -2098, 0,

	0x1.234p-1022, 1022, 0x1.234p0,

	0x1.234p-1022, 2045, 0x1.234p1023,

	0x1p-1074, 2097, 0x1p1023,

	0x1p-1074, 2098, INFINITY,

	0x1p-1074, 1, 0x1p-1073,

	0x1p-1073, -1, 0x1p-1074,

	0x1p-1074, -1, 0,

};

void test_scalbn()

{

	int i;

	double y;

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

		y = scalbn(t[i].x, t[i].n);

		if (y != t[i].y)

			error("scalbn(%a,%d) want %a got %a\n", t[i].x, t[i].n, t[i].y, y);

	}

}

void bench_scalbn_simple(int N)

{

	int i;

	volatile double y;

	for (i = 0; i < N; i++) {

		y = scalbn(1.25, 73);

	}

}

void bench_scalbn_hard(int N)

{

	int i;

	volatile double y;

	for (i = 0; i < N; i++) {

		y = scalbn(0x1.23p-1050, 2070);

	}

}