1/* $NetBSD: t_cos.c,v 1.4 2014/03/03 10:39:08 martin Exp $ */
2
3/*-
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jukka Ruohonen.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <atf-c.h>
33#include <math.h>
34
35static const struct {
36	int		angle;
37	double		x;
38	double		y;
39} angles[] = {
40	{ -180, -3.141592653589793, -1.0000000000000000 },
41	{ -135, -2.356194490192345, -0.7071067811865476 },
42	{  -90, -1.570796326794897,  0.0000000000000000 },
43	{  -45, -0.785398163397448,  0.7071067811865476 },
44	{    0,  0.000000000000000,  1.0000000000000000 },
45	{   30,  0.523598775598299,  0.8660254037844386 },
46	{   45,  0.785398163397448,  0.7071067811865476 },
47	{   60,  1.047197551196598,  0.5000000000000000 },
48	{   90,  1.570796326794897,  0.0000000000000000 },
49	{  120,  2.094395102393195, -0.5000000000000000 },
50	{  135,  2.356194490192345, -0.7071067811865476 },
51	{  150,  2.617993877991494, -0.8660254037844386 },
52	{  180,  3.141592653589793, -1.0000000000000000 },
53	{  270,  4.712388980384690,  0.0000000000000000 },
54	{  360,  6.283185307179586,  1.0000000000000000 }
55};
56
57/*
58 * cos(3)
59 */
60ATF_TC(cos_angles);
61ATF_TC_HEAD(cos_angles, tc)
62{
63	atf_tc_set_md_var(tc, "descr", "Test some selected angles");
64}
65
66ATF_TC_BODY(cos_angles, tc)
67{
68	const double eps = 1.0e-15;
69	size_t i;
70
71	for (i = 0; i < __arraycount(angles); i++) {
72
73		if (fabs(cos(angles[i].x) - angles[i].y) > eps)
74			atf_tc_fail_nonfatal("cos(%d deg) != %0.01f",
75			    angles[i].angle, angles[i].y);
76	}
77}
78
79ATF_TC(cos_nan);
80ATF_TC_HEAD(cos_nan, tc)
81{
82	atf_tc_set_md_var(tc, "descr", "Test cos(NaN) == NaN");
83}
84
85ATF_TC_BODY(cos_nan, tc)
86{
87	const double x = 0.0L / 0.0L;
88
89	ATF_CHECK(isnan(x) != 0);
90	ATF_CHECK(isnan(cos(x)) != 0);
91}
92
93ATF_TC(cos_inf_neg);
94ATF_TC_HEAD(cos_inf_neg, tc)
95{
96	atf_tc_set_md_var(tc, "descr", "Test cos(-Inf) == NaN");
97}
98
99ATF_TC_BODY(cos_inf_neg, tc)
100{
101	const double x = -1.0L / 0.0L;
102
103	ATF_CHECK(isnan(cos(x)) != 0);
104}
105
106ATF_TC(cos_inf_pos);
107ATF_TC_HEAD(cos_inf_pos, tc)
108{
109	atf_tc_set_md_var(tc, "descr", "Test cos(+Inf) == NaN");
110}
111
112ATF_TC_BODY(cos_inf_pos, tc)
113{
114	const double x = 1.0L / 0.0L;
115
116	ATF_CHECK(isnan(cos(x)) != 0);
117}
118
119
120ATF_TC(cos_zero_neg);
121ATF_TC_HEAD(cos_zero_neg, tc)
122{
123	atf_tc_set_md_var(tc, "descr", "Test cos(-0.0) == 1.0");
124}
125
126ATF_TC_BODY(cos_zero_neg, tc)
127{
128	const double x = -0.0L;
129
130	ATF_CHECK(cos(x) == 1.0);
131}
132
133ATF_TC(cos_zero_pos);
134ATF_TC_HEAD(cos_zero_pos, tc)
135{
136	atf_tc_set_md_var(tc, "descr", "Test cos(+0.0) == 1.0");
137}
138
139ATF_TC_BODY(cos_zero_pos, tc)
140{
141	const double x = 0.0L;
142
143	ATF_CHECK(cos(x) == 1.0);
144}
145
146/*
147 * cosf(3)
148 */
149ATF_TC(cosf_angles);
150ATF_TC_HEAD(cosf_angles, tc)
151{
152	atf_tc_set_md_var(tc, "descr", "Test some selected angles");
153}
154
155ATF_TC_BODY(cosf_angles, tc)
156{
157	const float eps = 1.0e-7;
158	float x, y;
159	size_t i;
160
161	for (i = 0; i < __arraycount(angles); i++) {
162
163		x = angles[i].x;
164		y = angles[i].y;
165
166		if (fabsf(cosf(x) - y) > eps)
167			atf_tc_fail_nonfatal("cosf(%d deg) != %0.01f",
168			    angles[i].angle, angles[i].y);
169	}
170}
171
172ATF_TC(cosf_nan);
173ATF_TC_HEAD(cosf_nan, tc)
174{
175	atf_tc_set_md_var(tc, "descr", "Test cosf(NaN) == NaN");
176}
177
178ATF_TC_BODY(cosf_nan, tc)
179{
180	const float x = 0.0L / 0.0L;
181
182	ATF_CHECK(isnan(x) != 0);
183	ATF_CHECK(isnan(cosf(x)) != 0);
184}
185
186ATF_TC(cosf_inf_neg);
187ATF_TC_HEAD(cosf_inf_neg, tc)
188{
189	atf_tc_set_md_var(tc, "descr", "Test cosf(-Inf) == NaN");
190}
191
192ATF_TC_BODY(cosf_inf_neg, tc)
193{
194	const float x = -1.0L / 0.0L;
195
196	if (isnan(cosf(x)) == 0) {
197		atf_tc_expect_fail("PR lib/45362");
198		atf_tc_fail("cosf(-Inf) != NaN");
199	}
200}
201
202ATF_TC(cosf_inf_pos);
203ATF_TC_HEAD(cosf_inf_pos, tc)
204{
205	atf_tc_set_md_var(tc, "descr", "Test cosf(+Inf) == NaN");
206}
207
208ATF_TC_BODY(cosf_inf_pos, tc)
209{
210	const float x = 1.0L / 0.0L;
211
212	if (isnan(cosf(x)) == 0) {
213		atf_tc_expect_fail("PR lib/45362");
214		atf_tc_fail("cosf(+Inf) != NaN");
215	}
216}
217
218
219ATF_TC(cosf_zero_neg);
220ATF_TC_HEAD(cosf_zero_neg, tc)
221{
222	atf_tc_set_md_var(tc, "descr", "Test cosf(-0.0) == 1.0");
223}
224
225ATF_TC_BODY(cosf_zero_neg, tc)
226{
227	const float x = -0.0L;
228
229	ATF_CHECK(cosf(x) == 1.0);
230}
231
232ATF_TC(cosf_zero_pos);
233ATF_TC_HEAD(cosf_zero_pos, tc)
234{
235	atf_tc_set_md_var(tc, "descr", "Test cosf(+0.0) == 1.0");
236}
237
238ATF_TC_BODY(cosf_zero_pos, tc)
239{
240	const float x = 0.0L;
241
242	ATF_CHECK(cosf(x) == 1.0);
243}
244
245ATF_TP_ADD_TCS(tp)
246{
247
248	ATF_TP_ADD_TC(tp, cos_angles);
249	ATF_TP_ADD_TC(tp, cos_nan);
250	ATF_TP_ADD_TC(tp, cos_inf_neg);
251	ATF_TP_ADD_TC(tp, cos_inf_pos);
252	ATF_TP_ADD_TC(tp, cos_zero_neg);
253	ATF_TP_ADD_TC(tp, cos_zero_pos);
254
255	ATF_TP_ADD_TC(tp, cosf_angles);
256	ATF_TP_ADD_TC(tp, cosf_nan);
257	ATF_TP_ADD_TC(tp, cosf_inf_neg);
258	ATF_TP_ADD_TC(tp, cosf_inf_pos);
259	ATF_TP_ADD_TC(tp, cosf_zero_neg);
260	ATF_TP_ADD_TC(tp, cosf_zero_pos);
261
262	return atf_no_error();
263}
264