1/* $NetBSD: t_asin.c,v 1.3 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	double x;
37	double y;
38} values[] = {
39	{ -1.0, -M_PI / 2, },
40	{ -0.9, -1.119769514998634, },
41	{ -0.5, -M_PI / 6, },
42	{ -0.1, -0.1001674211615598, },
43	{  0.1,  0.1001674211615598, },
44	{  0.5,  M_PI / 6, },
45	{  0.9,  1.119769514998634, },
46	{  1.0,  M_PI / 2, },
47};
48
49/*
50 * asin(3)
51 */
52ATF_TC(asin_nan);
53ATF_TC_HEAD(asin_nan, tc)
54{
55	atf_tc_set_md_var(tc, "descr", "Test asin(NaN) == NaN");
56}
57
58ATF_TC_BODY(asin_nan, tc)
59{
60	const double x = 0.0L / 0.0L;
61
62	if (isnan(asin(x)) == 0)
63		atf_tc_fail_nonfatal("asin(NaN) != NaN");
64}
65
66ATF_TC(asin_inf_neg);
67ATF_TC_HEAD(asin_inf_neg, tc)
68{
69	atf_tc_set_md_var(tc, "descr", "Test asin(-Inf) == NaN");
70}
71
72ATF_TC_BODY(asin_inf_neg, tc)
73{
74	const double x = -1.0L / 0.0L;
75
76	if (isnan(asin(x)) == 0)
77		atf_tc_fail_nonfatal("asin(-Inf) != NaN");
78}
79
80ATF_TC(asin_inf_pos);
81ATF_TC_HEAD(asin_inf_pos, tc)
82{
83	atf_tc_set_md_var(tc, "descr", "Test asin(+Inf) == NaN");
84}
85
86ATF_TC_BODY(asin_inf_pos, tc)
87{
88	const double x = 1.0L / 0.0L;
89
90	if (isnan(asin(x)) == 0)
91		atf_tc_fail_nonfatal("asin(+Inf) != NaN");
92}
93
94ATF_TC(asin_range);
95ATF_TC_HEAD(asin_range, tc)
96{
97	atf_tc_set_md_var(tc, "descr", "Test asin(x) == NaN, x < -1, x > 1");
98}
99
100ATF_TC_BODY(asin_range, tc)
101{
102	const double x[] = { -1.1, -1.000000001, 1.1, 1.000000001 };
103	size_t i;
104
105	for (i = 0; i < __arraycount(x); i++) {
106
107		if (isnan(asin(x[i])) == 0)
108			atf_tc_fail_nonfatal("asin(%f) != NaN", x[i]);
109	}
110}
111
112ATF_TC(asin_inrange);
113ATF_TC_HEAD(asin_inrange, tc)
114{
115	atf_tc_set_md_var(tc, "descr", "Test asin(x) for some values");
116}
117
118ATF_TC_BODY(asin_inrange, tc)
119{
120	const double eps = 1.0e-15;
121	double y;
122	size_t i;
123
124	for (i = 0; i < __arraycount(values); i++) {
125		y = asin(values[i].x);
126		if (fabs(y - values[i].y) > eps)
127			atf_tc_fail_nonfatal("asin(%g) != %g",
128				values[i].x, values[i].y);
129	}
130}
131
132ATF_TC(asin_zero_neg);
133ATF_TC_HEAD(asin_zero_neg, tc)
134{
135	atf_tc_set_md_var(tc, "descr", "Test asin(-0.0) == -0.0");
136}
137
138ATF_TC_BODY(asin_zero_neg, tc)
139{
140	const double x = -0.0L;
141	double y = asin(x);
142
143	if (fabs(y) > 0.0 || signbit(y) == 0)
144		atf_tc_fail_nonfatal("asin(-0.0) != -0.0");
145}
146
147ATF_TC(asin_zero_pos);
148ATF_TC_HEAD(asin_zero_pos, tc)
149{
150	atf_tc_set_md_var(tc, "descr", "Test asin(+0.0) == +0.0");
151}
152
153ATF_TC_BODY(asin_zero_pos, tc)
154{
155	const double x = 0.0L;
156	double y = asin(x);
157
158	if (fabs(y) > 0.0 || signbit(y) != 0)
159		atf_tc_fail_nonfatal("asin(+0.0) != +0.0");
160}
161
162/*
163 * asinf(3)
164 */
165ATF_TC(asinf_nan);
166ATF_TC_HEAD(asinf_nan, tc)
167{
168	atf_tc_set_md_var(tc, "descr", "Test asinf(NaN) == NaN");
169}
170
171ATF_TC_BODY(asinf_nan, tc)
172{
173	const float x = 0.0L / 0.0L;
174
175	if (isnan(asinf(x)) == 0)
176		atf_tc_fail_nonfatal("asinf(NaN) != NaN");
177}
178
179ATF_TC(asinf_inf_neg);
180ATF_TC_HEAD(asinf_inf_neg, tc)
181{
182	atf_tc_set_md_var(tc, "descr", "Test asinf(-Inf) == NaN");
183}
184
185ATF_TC_BODY(asinf_inf_neg, tc)
186{
187	const float x = -1.0L / 0.0L;
188
189	if (isnan(asinf(x)) == 0)
190		atf_tc_fail_nonfatal("asinf(-Inf) != NaN");
191}
192
193ATF_TC(asinf_inf_pos);
194ATF_TC_HEAD(asinf_inf_pos, tc)
195{
196	atf_tc_set_md_var(tc, "descr", "Test asinf(+Inf) == NaN");
197}
198
199ATF_TC_BODY(asinf_inf_pos, tc)
200{
201	const float x = 1.0L / 0.0L;
202
203	if (isnan(asinf(x)) == 0)
204		atf_tc_fail_nonfatal("asinf(+Inf) != NaN");
205}
206
207ATF_TC(asinf_range);
208ATF_TC_HEAD(asinf_range, tc)
209{
210	atf_tc_set_md_var(tc, "descr", "Test asinf(x) == NaN, x < -1, x > 1");
211}
212
213ATF_TC_BODY(asinf_range, tc)
214{
215	const float x[] = { -1.1, -1.0000001, 1.1, 1.0000001 };
216	size_t i;
217
218	for (i = 0; i < __arraycount(x); i++) {
219
220		if (isnan(asinf(x[i])) == 0)
221			atf_tc_fail_nonfatal("asinf(%f) != NaN", x[i]);
222	}
223}
224
225ATF_TC(asinf_inrange);
226ATF_TC_HEAD(asinf_inrange, tc)
227{
228	atf_tc_set_md_var(tc, "descr", "Test asinf(x) for some values");
229}
230
231ATF_TC_BODY(asinf_inrange, tc)
232{
233	const float eps = 1.0e-6;
234	float x;
235	float y;
236	size_t i;
237
238	for (i = 0; i < __arraycount(values); i++) {
239		x = values[i].x;
240		y = values[i].y;
241		if (fabs(asinf(x) - y) > eps)
242			atf_tc_fail_nonfatal("asinf(%g) != %g", x, y);
243	}
244}
245
246ATF_TC(asinf_zero_neg);
247ATF_TC_HEAD(asinf_zero_neg, tc)
248{
249	atf_tc_set_md_var(tc, "descr", "Test asinf(-0.0) == -0.0");
250}
251
252ATF_TC_BODY(asinf_zero_neg, tc)
253{
254	const float x = -0.0L;
255	float y = asinf(x);
256
257	if (fabsf(y) > 0.0 || signbit(y) == 0)
258		atf_tc_fail_nonfatal("asinf(-0.0) != -0.0");
259}
260
261ATF_TC(asinf_zero_pos);
262ATF_TC_HEAD(asinf_zero_pos, tc)
263{
264	atf_tc_set_md_var(tc, "descr", "Test asinf(+0.0) == +0.0");
265}
266
267ATF_TC_BODY(asinf_zero_pos, tc)
268{
269	const float x = 0.0L;
270	float y = asinf(x);
271
272	if (fabsf(y) > 0.0 || signbit(y) != 0)
273		atf_tc_fail_nonfatal("asinf(+0.0) != +0.0");
274}
275
276ATF_TP_ADD_TCS(tp)
277{
278
279	ATF_TP_ADD_TC(tp, asin_nan);
280	ATF_TP_ADD_TC(tp, asin_inf_neg);
281	ATF_TP_ADD_TC(tp, asin_inf_pos);
282	ATF_TP_ADD_TC(tp, asin_range);
283	ATF_TP_ADD_TC(tp, asin_inrange);
284	ATF_TP_ADD_TC(tp, asin_zero_neg);
285	ATF_TP_ADD_TC(tp, asin_zero_pos);
286
287	ATF_TP_ADD_TC(tp, asinf_nan);
288	ATF_TP_ADD_TC(tp, asinf_inf_neg);
289	ATF_TP_ADD_TC(tp, asinf_inf_pos);
290	ATF_TP_ADD_TC(tp, asinf_range);
291	ATF_TP_ADD_TC(tp, asinf_inrange);
292	ATF_TP_ADD_TC(tp, asinf_zero_neg);
293	ATF_TP_ADD_TC(tp, asinf_zero_pos);
294
295	return atf_no_error();
296}
297