1/* $NetBSD: t_cosh.c,v 1.6 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#include <sys/cdefs.h>
32__RCSID("$NetBSD: t_cosh.c,v 1.6 2014/03/03 10:39:08 martin Exp $");
33
34#include <atf-c.h>
35#include <math.h>
36#include <stdio.h>
37
38static const struct {
39	double x;
40	double y;
41	double e;
42} values[] = {
43	{ -10,    11013.23292010332, 1e4, },
44	{ -2,     3.762195691083631, 1,   },
45	{ -1,     1.543080634815244, 1,   },
46	{ -0.05,  1.001250260438369, 1,   },
47	{ -0.001, 1.000000500000042, 1,   },
48	{  0,     1,                 1,   },
49	{  0.001, 1.000000500000042, 1,   },
50	{  0.05,  1.001250260438369, 1,   },
51	{  1,     1.543080634815244, 1,   },
52	{  2,     3.762195691083631, 1,   },
53	{  10,    11013.23292010332, 1e4, },
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	double eps;
68	double x;
69	double y;
70	size_t i;
71
72	for (i = 0; i < __arraycount(values); i++) {
73		x = values[i].x;
74		y = values[i].y;
75		eps = 1e-15 * values[i].e;
76
77		if (fabs(cosh(x) - y) > eps)
78			atf_tc_fail_nonfatal("cosh(%g) != %g\n", x, y);
79	}
80}
81
82ATF_TC(cosh_nan);
83ATF_TC_HEAD(cosh_nan, tc)
84{
85	atf_tc_set_md_var(tc, "descr", "Test cosh(NaN) == NaN");
86}
87
88ATF_TC_BODY(cosh_nan, tc)
89{
90	const double x = 0.0L / 0.0L;
91
92	ATF_CHECK(isnan(x) != 0);
93	ATF_CHECK(isnan(cosh(x)) != 0);
94}
95
96ATF_TC(cosh_inf_neg);
97ATF_TC_HEAD(cosh_inf_neg, tc)
98{
99	atf_tc_set_md_var(tc, "descr", "Test cosh(-Inf) == +Inf");
100}
101
102ATF_TC_BODY(cosh_inf_neg, tc)
103{
104	const double x = -1.0L / 0.0L;
105	double y = cosh(x);
106
107	ATF_CHECK(isinf(y) != 0);
108	ATF_CHECK(signbit(y) == 0);
109}
110
111ATF_TC(cosh_inf_pos);
112ATF_TC_HEAD(cosh_inf_pos, tc)
113{
114	atf_tc_set_md_var(tc, "descr", "Test cosh(+Inf) == +Inf");
115}
116
117ATF_TC_BODY(cosh_inf_pos, tc)
118{
119	const double x = 1.0L / 0.0L;
120	double y = cosh(x);
121
122	ATF_CHECK(isinf(y) != 0);
123	ATF_CHECK(signbit(y) == 0);
124}
125
126ATF_TC(cosh_zero_neg);
127ATF_TC_HEAD(cosh_zero_neg, tc)
128{
129	atf_tc_set_md_var(tc, "descr", "Test cosh(-0.0) == 1.0");
130}
131
132ATF_TC_BODY(cosh_zero_neg, tc)
133{
134	const double x = -0.0L;
135
136	if (cosh(x) != 1.0)
137		atf_tc_fail_nonfatal("cosh(-0.0) != 1.0");
138}
139
140ATF_TC(cosh_zero_pos);
141ATF_TC_HEAD(cosh_zero_pos, tc)
142{
143	atf_tc_set_md_var(tc, "descr", "Test cosh(+0.0) == 1.0");
144}
145
146ATF_TC_BODY(cosh_zero_pos, tc)
147{
148	const double x = 0.0L;
149
150	if (cosh(x) != 1.0)
151		atf_tc_fail_nonfatal("cosh(+0.0) != 1.0");
152}
153
154/*
155 * coshf(3)
156 */
157ATF_TC(coshf_inrange);
158ATF_TC_HEAD(coshf_inrange, tc)
159{
160	atf_tc_set_md_var(tc, "descr", "coshf(x) for some values");
161}
162
163ATF_TC_BODY(coshf_inrange, tc)
164{
165	float eps;
166	float x;
167	float y;
168	size_t i;
169
170	for (i = 0; i < __arraycount(values); i++) {
171		x = values[i].x;
172		y = values[i].y;
173		eps = 1e-6 * values[i].e;
174
175		if (fabsf(coshf(x) - y) > eps)
176			atf_tc_fail_nonfatal("coshf(%g) != %g\n", x, y);
177	}
178}
179
180ATF_TC(coshf_nan);
181ATF_TC_HEAD(coshf_nan, tc)
182{
183	atf_tc_set_md_var(tc, "descr", "Test coshf(NaN) == NaN");
184}
185
186ATF_TC_BODY(coshf_nan, tc)
187{
188	const float x = 0.0L / 0.0L;
189
190	ATF_CHECK(isnan(x) != 0);
191	ATF_CHECK(isnan(coshf(x)) != 0);
192}
193
194ATF_TC(coshf_inf_neg);
195ATF_TC_HEAD(coshf_inf_neg, tc)
196{
197	atf_tc_set_md_var(tc, "descr", "Test coshf(-Inf) == +Inf");
198}
199
200ATF_TC_BODY(coshf_inf_neg, tc)
201{
202	const float x = -1.0L / 0.0L;
203	float y = coshf(x);
204
205	ATF_CHECK(isinf(y) != 0);
206	ATF_CHECK(signbit(y) == 0);
207}
208
209ATF_TC(coshf_inf_pos);
210ATF_TC_HEAD(coshf_inf_pos, tc)
211{
212	atf_tc_set_md_var(tc, "descr", "Test coshf(+Inf) == +Inf");
213}
214
215ATF_TC_BODY(coshf_inf_pos, tc)
216{
217	const float x = 1.0L / 0.0L;
218	float y = coshf(x);
219
220	ATF_CHECK(isinf(y) != 0);
221	ATF_CHECK(signbit(y) == 0);
222}
223
224ATF_TC(coshf_zero_neg);
225ATF_TC_HEAD(coshf_zero_neg, tc)
226{
227	atf_tc_set_md_var(tc, "descr", "Test coshf(-0.0) == 1.0");
228}
229
230ATF_TC_BODY(coshf_zero_neg, tc)
231{
232	const float x = -0.0L;
233
234	if (coshf(x) != 1.0)
235		atf_tc_fail_nonfatal("coshf(-0.0) != 1.0");
236}
237
238ATF_TC(coshf_zero_pos);
239ATF_TC_HEAD(coshf_zero_pos, tc)
240{
241	atf_tc_set_md_var(tc, "descr", "Test coshf(+0.0) == 1.0");
242}
243
244ATF_TC_BODY(coshf_zero_pos, tc)
245{
246	const float x = 0.0L;
247
248	if (coshf(x) != 1.0)
249		atf_tc_fail_nonfatal("coshf(+0.0) != 1.0");
250}
251
252ATF_TP_ADD_TCS(tp)
253{
254
255	ATF_TP_ADD_TC(tp, cosh_inrange);
256	ATF_TP_ADD_TC(tp, cosh_nan);
257	ATF_TP_ADD_TC(tp, cosh_inf_neg);
258	ATF_TP_ADD_TC(tp, cosh_inf_pos);
259	ATF_TP_ADD_TC(tp, cosh_zero_neg);
260	ATF_TP_ADD_TC(tp, cosh_zero_pos);
261
262	ATF_TP_ADD_TC(tp, coshf_inrange);
263	ATF_TP_ADD_TC(tp, coshf_nan);
264	ATF_TP_ADD_TC(tp, coshf_inf_neg);
265	ATF_TP_ADD_TC(tp, coshf_inf_pos);
266	ATF_TP_ADD_TC(tp, coshf_zero_neg);
267	ATF_TP_ADD_TC(tp, coshf_zero_pos);
268
269	return atf_no_error();
270}
271