/* $NetBSD: t_cos.c,v 1.4 2014/03/03 10:39:08 martin Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jukka Ruohonen.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <atf-c.h>
#include <math.h>
static const struct {
int angle;
double x;
double y;
} angles[] = {
{ -180, -3.141592653589793, -1.0000000000000000 },
{ -135, -2.356194490192345, -0.7071067811865476 },
{ -90, -1.570796326794897, 0.0000000000000000 },
{ -45, -0.785398163397448, 0.7071067811865476 },
{ 0, 0.000000000000000, 1.0000000000000000 },
{ 30, 0.523598775598299, 0.8660254037844386 },
{ 45, 0.785398163397448, 0.7071067811865476 },
{ 60, 1.047197551196598, 0.5000000000000000 },
{ 90, 1.570796326794897, 0.0000000000000000 },
{ 120, 2.094395102393195, -0.5000000000000000 },
{ 135, 2.356194490192345, -0.7071067811865476 },
{ 150, 2.617993877991494, -0.8660254037844386 },
{ 180, 3.141592653589793, -1.0000000000000000 },
{ 270, 4.712388980384690, 0.0000000000000000 },
{ 360, 6.283185307179586, 1.0000000000000000 }
};
/*
* cos(3)
*/
ATF_TC(cos_angles);
ATF_TC_HEAD(cos_angles, tc)
{
atf_tc_set_md_var(tc, "descr", "Test some selected angles");
}
ATF_TC_BODY(cos_angles, tc)
{
const double eps = 1.0e-15;
size_t i;
for (i = 0; i < __arraycount(angles); i++) {
if (fabs(cos(angles[i].x) - angles[i].y) > eps)
atf_tc_fail_nonfatal("cos(%d deg) != %0.01f",
angles[i].angle, angles[i].y);
}
}
ATF_TC(cos_nan);
ATF_TC_HEAD(cos_nan, tc)
{
atf_tc_set_md_var(tc, "descr", "Test cos(NaN) == NaN");
}
ATF_TC_BODY(cos_nan, tc)
{
const double x = 0.0L / 0.0L;
ATF_CHECK(isnan(x) != 0);
ATF_CHECK(isnan(cos(x)) != 0);
}
ATF_TC(cos_inf_neg);
ATF_TC_HEAD(cos_inf_neg, tc)
{
atf_tc_set_md_var(tc, "descr", "Test cos(-Inf) == NaN");
}
ATF_TC_BODY(cos_inf_neg, tc)
{
const double x = -1.0L / 0.0L;
ATF_CHECK(isnan(cos(x)) != 0);
}
ATF_TC(cos_inf_pos);
ATF_TC_HEAD(cos_inf_pos, tc)
{
atf_tc_set_md_var(tc, "descr", "Test cos(+Inf) == NaN");
}
ATF_TC_BODY(cos_inf_pos, tc)
{
const double x = 1.0L / 0.0L;
ATF_CHECK(isnan(cos(x)) != 0);
}
ATF_TC(cos_zero_neg);
ATF_TC_HEAD(cos_zero_neg, tc)
{
atf_tc_set_md_var(tc, "descr", "Test cos(-0.0) == 1.0");
}
ATF_TC_BODY(cos_zero_neg, tc)
{
const double x = -0.0L;
ATF_CHECK(cos(x) == 1.0);
}
ATF_TC(cos_zero_pos);
ATF_TC_HEAD(cos_zero_pos, tc)
{
atf_tc_set_md_var(tc, "descr", "Test cos(+0.0) == 1.0");
}
ATF_TC_BODY(cos_zero_pos, tc)
{
const double x = 0.0L;
ATF_CHECK(cos(x) == 1.0);
}
/*
* cosf(3)
*/
ATF_TC(cosf_angles);
ATF_TC_HEAD(cosf_angles, tc)
{
atf_tc_set_md_var(tc, "descr", "Test some selected angles");
}
ATF_TC_BODY(cosf_angles, tc)
{
const float eps = 1.0e-7;
float x, y;
size_t i;
for (i = 0; i < __arraycount(angles); i++) {
x = angles[i].x;
y = angles[i].y;
if (fabsf(cosf(x) - y) > eps)
atf_tc_fail_nonfatal("cosf(%d deg) != %0.01f",
angles[i].angle, angles[i].y);
}
}
ATF_TC(cosf_nan);
ATF_TC_HEAD(cosf_nan, tc)
{
atf_tc_set_md_var(tc, "descr", "Test cosf(NaN) == NaN");
}
ATF_TC_BODY(cosf_nan, tc)
{
const float x = 0.0L / 0.0L;
ATF_CHECK(isnan(x) != 0);
ATF_CHECK(isnan(cosf(x)) != 0);
}
ATF_TC(cosf_inf_neg);
ATF_TC_HEAD(cosf_inf_neg, tc)
{
atf_tc_set_md_var(tc, "descr", "Test cosf(-Inf) == NaN");
}
ATF_TC_BODY(cosf_inf_neg, tc)
{
const float x = -1.0L / 0.0L;
if (isnan(cosf(x)) == 0) {
atf_tc_expect_fail("PR lib/45362");
atf_tc_fail("cosf(-Inf) != NaN");
}
}
ATF_TC(cosf_inf_pos);
ATF_TC_HEAD(cosf_inf_pos, tc)
{
atf_tc_set_md_var(tc, "descr", "Test cosf(+Inf) == NaN");
}
ATF_TC_BODY(cosf_inf_pos, tc)
{
const float x = 1.0L / 0.0L;
if (isnan(cosf(x)) == 0) {
atf_tc_expect_fail("PR lib/45362");
atf_tc_fail("cosf(+Inf) != NaN");
}
}
ATF_TC(cosf_zero_neg);
ATF_TC_HEAD(cosf_zero_neg, tc)
{
atf_tc_set_md_var(tc, "descr", "Test cosf(-0.0) == 1.0");
}
ATF_TC_BODY(cosf_zero_neg, tc)
{
const float x = -0.0L;
ATF_CHECK(cosf(x) == 1.0);
}
ATF_TC(cosf_zero_pos);
ATF_TC_HEAD(cosf_zero_pos, tc)
{
atf_tc_set_md_var(tc, "descr", "Test cosf(+0.0) == 1.0");
}
ATF_TC_BODY(cosf_zero_pos, tc)
{
const float x = 0.0L;
ATF_CHECK(cosf(x) == 1.0);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, cos_angles);
ATF_TP_ADD_TC(tp, cos_nan);
ATF_TP_ADD_TC(tp, cos_inf_neg);
ATF_TP_ADD_TC(tp, cos_inf_pos);
ATF_TP_ADD_TC(tp, cos_zero_neg);
ATF_TP_ADD_TC(tp, cos_zero_pos);
ATF_TP_ADD_TC(tp, cosf_angles);
ATF_TP_ADD_TC(tp, cosf_nan);
ATF_TP_ADD_TC(tp, cosf_inf_neg);
ATF_TP_ADD_TC(tp, cosf_inf_pos);
ATF_TP_ADD_TC(tp, cosf_zero_neg);
ATF_TP_ADD_TC(tp, cosf_zero_pos);
return atf_no_error();
}