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
38 static 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 */
59 ATF_TC(cosh_inrange);
ATF_TC_HEAD(cosh_inrange,tc)60 ATF_TC_HEAD(cosh_inrange, tc)
61 {
62 atf_tc_set_md_var(tc, "descr", "cosh(x) for some values");
63 }
64
ATF_TC_BODY(cosh_inrange,tc)65 ATF_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
82 ATF_TC(cosh_nan);
ATF_TC_HEAD(cosh_nan,tc)83 ATF_TC_HEAD(cosh_nan, tc)
84 {
85 atf_tc_set_md_var(tc, "descr", "Test cosh(NaN) == NaN");
86 }
87
ATF_TC_BODY(cosh_nan,tc)88 ATF_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
96 ATF_TC(cosh_inf_neg);
ATF_TC_HEAD(cosh_inf_neg,tc)97 ATF_TC_HEAD(cosh_inf_neg, tc)
98 {
99 atf_tc_set_md_var(tc, "descr", "Test cosh(-Inf) == +Inf");
100 }
101
ATF_TC_BODY(cosh_inf_neg,tc)102 ATF_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
111 ATF_TC(cosh_inf_pos);
ATF_TC_HEAD(cosh_inf_pos,tc)112 ATF_TC_HEAD(cosh_inf_pos, tc)
113 {
114 atf_tc_set_md_var(tc, "descr", "Test cosh(+Inf) == +Inf");
115 }
116
ATF_TC_BODY(cosh_inf_pos,tc)117 ATF_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
126 ATF_TC(cosh_zero_neg);
ATF_TC_HEAD(cosh_zero_neg,tc)127 ATF_TC_HEAD(cosh_zero_neg, tc)
128 {
129 atf_tc_set_md_var(tc, "descr", "Test cosh(-0.0) == 1.0");
130 }
131
ATF_TC_BODY(cosh_zero_neg,tc)132 ATF_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
140 ATF_TC(cosh_zero_pos);
ATF_TC_HEAD(cosh_zero_pos,tc)141 ATF_TC_HEAD(cosh_zero_pos, tc)
142 {
143 atf_tc_set_md_var(tc, "descr", "Test cosh(+0.0) == 1.0");
144 }
145
ATF_TC_BODY(cosh_zero_pos,tc)146 ATF_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 */
157 ATF_TC(coshf_inrange);
ATF_TC_HEAD(coshf_inrange,tc)158 ATF_TC_HEAD(coshf_inrange, tc)
159 {
160 atf_tc_set_md_var(tc, "descr", "coshf(x) for some values");
161 }
162
ATF_TC_BODY(coshf_inrange,tc)163 ATF_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
180 ATF_TC(coshf_nan);
ATF_TC_HEAD(coshf_nan,tc)181 ATF_TC_HEAD(coshf_nan, tc)
182 {
183 atf_tc_set_md_var(tc, "descr", "Test coshf(NaN) == NaN");
184 }
185
ATF_TC_BODY(coshf_nan,tc)186 ATF_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
194 ATF_TC(coshf_inf_neg);
ATF_TC_HEAD(coshf_inf_neg,tc)195 ATF_TC_HEAD(coshf_inf_neg, tc)
196 {
197 atf_tc_set_md_var(tc, "descr", "Test coshf(-Inf) == +Inf");
198 }
199
ATF_TC_BODY(coshf_inf_neg,tc)200 ATF_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
209 ATF_TC(coshf_inf_pos);
ATF_TC_HEAD(coshf_inf_pos,tc)210 ATF_TC_HEAD(coshf_inf_pos, tc)
211 {
212 atf_tc_set_md_var(tc, "descr", "Test coshf(+Inf) == +Inf");
213 }
214
ATF_TC_BODY(coshf_inf_pos,tc)215 ATF_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
224 ATF_TC(coshf_zero_neg);
ATF_TC_HEAD(coshf_zero_neg,tc)225 ATF_TC_HEAD(coshf_zero_neg, tc)
226 {
227 atf_tc_set_md_var(tc, "descr", "Test coshf(-0.0) == 1.0");
228 }
229
ATF_TC_BODY(coshf_zero_neg,tc)230 ATF_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
238 ATF_TC(coshf_zero_pos);
ATF_TC_HEAD(coshf_zero_pos,tc)239 ATF_TC_HEAD(coshf_zero_pos, tc)
240 {
241 atf_tc_set_md_var(tc, "descr", "Test coshf(+0.0) == 1.0");
242 }
243
ATF_TC_BODY(coshf_zero_pos,tc)244 ATF_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
ATF_TP_ADD_TCS(tp)252 ATF_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