1/* $NetBSD: t_cosh.c,v 1.7 2018/11/07 03:59:36 riastradh 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#include <sys/cdefs.h>
32__RCSID("$NetBSD: t_cosh.c,v 1.7 2018/11/07 03:59:36 riastradh Exp $");
33
34#include <atf-c.h>
35#include <float.h>
36#include <math.h>
37#include <stdio.h>
38
39static const struct {
40	double x;
41	double y;
42} values[] = {
43	{ -10,    11013.232920103323, },
44	{ -2,     3.762195691083631, },
45	{ -1,     1.543080634815244, },
46	{ -0.05,  1.001250260438369, },
47	{ -0.001, 1.0000005000000418, },
48	{  0,     1,                 },
49	{  0.001, 1.0000005000000418, },
50	{  0.05,  1.001250260438369, },
51	{  1,     1.543080634815244, },
52	{  2,     3.762195691083631, },
53	{  10,    11013.232920103323, },
54};
55
56/*
57 * cosh(3)
58 */
59ATF_TC(cosh_inrange);
60ATF_TC_HEAD(cosh_inrange, tc)
61{
62	atf_tc_set_md_var(tc, "descr", "cosh(x) for some values");
63}
64
65ATF_TC_BODY(cosh_inrange, tc)
66{
67	const double eps = DBL_EPSILON;
68	size_t i;
69
70	for (i = 0; i < __arraycount(values); i++) {
71		double x = values[i].x;
72		double cosh_x = values[i].y;
73
74		if (!(fabs((cosh(x) - cosh_x)/cosh_x) <= eps)) {
75			atf_tc_fail_nonfatal("cosh(%.17g) = %.17g != %.17g\n",
76			    x, cosh(x), cosh_x);
77		}
78	}
79}
80
81ATF_TC(cosh_nan);
82ATF_TC_HEAD(cosh_nan, tc)
83{
84	atf_tc_set_md_var(tc, "descr", "Test cosh(NaN) == NaN");
85}
86
87ATF_TC_BODY(cosh_nan, tc)
88{
89	const double x = 0.0L / 0.0L;
90
91	ATF_CHECK(isnan(x) != 0);
92	ATF_CHECK(isnan(cosh(x)) != 0);
93}
94
95ATF_TC(cosh_inf_neg);
96ATF_TC_HEAD(cosh_inf_neg, tc)
97{
98	atf_tc_set_md_var(tc, "descr", "Test cosh(-Inf) == +Inf");
99}
100
101ATF_TC_BODY(cosh_inf_neg, tc)
102{
103	const double x = -1.0L / 0.0L;
104	double y = cosh(x);
105
106	ATF_CHECK(isinf(y) != 0);
107	ATF_CHECK(signbit(y) == 0);
108}
109
110ATF_TC(cosh_inf_pos);
111ATF_TC_HEAD(cosh_inf_pos, tc)
112{
113	atf_tc_set_md_var(tc, "descr", "Test cosh(+Inf) == +Inf");
114}
115
116ATF_TC_BODY(cosh_inf_pos, tc)
117{
118	const double x = 1.0L / 0.0L;
119	double y = cosh(x);
120
121	ATF_CHECK(isinf(y) != 0);
122	ATF_CHECK(signbit(y) == 0);
123}
124
125ATF_TC(cosh_zero_neg);
126ATF_TC_HEAD(cosh_zero_neg, tc)
127{
128	atf_tc_set_md_var(tc, "descr", "Test cosh(-0.0) == 1.0");
129}
130
131ATF_TC_BODY(cosh_zero_neg, tc)
132{
133	const double x = -0.0L;
134
135	if (cosh(x) != 1.0)
136		atf_tc_fail_nonfatal("cosh(-0.0) != 1.0");
137}
138
139ATF_TC(cosh_zero_pos);
140ATF_TC_HEAD(cosh_zero_pos, tc)
141{
142	atf_tc_set_md_var(tc, "descr", "Test cosh(+0.0) == 1.0");
143}
144
145ATF_TC_BODY(cosh_zero_pos, tc)
146{
147	const double x = 0.0L;
148
149	if (cosh(x) != 1.0)
150		atf_tc_fail_nonfatal("cosh(+0.0) != 1.0");
151}
152
153/*
154 * coshf(3)
155 */
156ATF_TC(coshf_inrange);
157ATF_TC_HEAD(coshf_inrange, tc)
158{
159	atf_tc_set_md_var(tc, "descr", "coshf(x) for some values");
160}
161
162ATF_TC_BODY(coshf_inrange, tc)
163{
164	const float eps = FLT_EPSILON;
165	size_t i;
166
167	for (i = 0; i < __arraycount(values); i++) {
168		float x = values[i].x;
169		float cosh_x = values[i].y;
170
171		if (!(fabsf((coshf(x) - cosh_x)/cosh_x) <= eps)) {
172			atf_tc_fail_nonfatal("coshf(%.17g) = %.17g != %.17g\n",
173			    x, coshf(x), cosh_x);
174		}
175	}
176}
177
178ATF_TC(coshf_nan);
179ATF_TC_HEAD(coshf_nan, tc)
180{
181	atf_tc_set_md_var(tc, "descr", "Test coshf(NaN) == NaN");
182}
183
184ATF_TC_BODY(coshf_nan, tc)
185{
186	const float x = 0.0L / 0.0L;
187
188	ATF_CHECK(isnan(x) != 0);
189	ATF_CHECK(isnan(coshf(x)) != 0);
190}
191
192ATF_TC(coshf_inf_neg);
193ATF_TC_HEAD(coshf_inf_neg, tc)
194{
195	atf_tc_set_md_var(tc, "descr", "Test coshf(-Inf) == +Inf");
196}
197
198ATF_TC_BODY(coshf_inf_neg, tc)
199{
200	const float x = -1.0L / 0.0L;
201	float y = coshf(x);
202
203	ATF_CHECK(isinf(y) != 0);
204	ATF_CHECK(signbit(y) == 0);
205}
206
207ATF_TC(coshf_inf_pos);
208ATF_TC_HEAD(coshf_inf_pos, tc)
209{
210	atf_tc_set_md_var(tc, "descr", "Test coshf(+Inf) == +Inf");
211}
212
213ATF_TC_BODY(coshf_inf_pos, tc)
214{
215	const float x = 1.0L / 0.0L;
216	float y = coshf(x);
217
218	ATF_CHECK(isinf(y) != 0);
219	ATF_CHECK(signbit(y) == 0);
220}
221
222ATF_TC(coshf_zero_neg);
223ATF_TC_HEAD(coshf_zero_neg, tc)
224{
225	atf_tc_set_md_var(tc, "descr", "Test coshf(-0.0) == 1.0");
226}
227
228ATF_TC_BODY(coshf_zero_neg, tc)
229{
230	const float x = -0.0L;
231
232	if (coshf(x) != 1.0)
233		atf_tc_fail_nonfatal("coshf(-0.0) != 1.0");
234}
235
236ATF_TC(coshf_zero_pos);
237ATF_TC_HEAD(coshf_zero_pos, tc)
238{
239	atf_tc_set_md_var(tc, "descr", "Test coshf(+0.0) == 1.0");
240}
241
242ATF_TC_BODY(coshf_zero_pos, tc)
243{
244	const float x = 0.0L;
245
246	if (coshf(x) != 1.0)
247		atf_tc_fail_nonfatal("coshf(+0.0) != 1.0");
248}
249
250ATF_TP_ADD_TCS(tp)
251{
252
253	ATF_TP_ADD_TC(tp, cosh_inrange);
254	ATF_TP_ADD_TC(tp, cosh_nan);
255	ATF_TP_ADD_TC(tp, cosh_inf_neg);
256	ATF_TP_ADD_TC(tp, cosh_inf_pos);
257	ATF_TP_ADD_TC(tp, cosh_zero_neg);
258	ATF_TP_ADD_TC(tp, cosh_zero_pos);
259
260	ATF_TP_ADD_TC(tp, coshf_inrange);
261	ATF_TP_ADD_TC(tp, coshf_nan);
262	ATF_TP_ADD_TC(tp, coshf_inf_neg);
263	ATF_TP_ADD_TC(tp, coshf_inf_pos);
264	ATF_TP_ADD_TC(tp, coshf_zero_neg);
265	ATF_TP_ADD_TC(tp, coshf_zero_pos);
266
267	return atf_no_error();
268}
269