1 /* $NetBSD: t_tan.c,v 1.5 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
35 static const struct {
36 int angle;
37 double x;
38 double y;
39 } angles[] = {
40 { -180, -3.141592653589793, 0.0000000000000000 },
41 { -135, -2.356194490192345, 1.0000000000000000 },
42 { -45, -0.785398163397448, -1.0000000000000000 },
43 { 0, 0.000000000000000, 0.0000000000000000 },
44 { 30, 0.523598775598299, 0.5773502691896258 },
45 { 45, 0.785398163397448, 1.0000000000000000 },
46 { 60, 1.047197551196598, 1.7320508075688773 },
47 { 120, 2.094395102393195, -1.7320508075688773 },
48 { 135, 2.356194490192345, -1.0000000000000000 },
49 { 150, 2.617993877991494, -0.5773502691896258 },
50 { 180, 3.141592653589793, 0.0000000000000000 },
51 { 360, 6.283185307179586, 0.0000000000000000 }
52 };
53
54 /*
55 * tan(3)
56 */
57 ATF_TC(tan_angles);
ATF_TC_HEAD(tan_angles,tc)58 ATF_TC_HEAD(tan_angles, tc)
59 {
60 atf_tc_set_md_var(tc, "descr", "Test some selected angles");
61 }
62
ATF_TC_BODY(tan_angles,tc)63 ATF_TC_BODY(tan_angles, tc)
64 {
65 const double eps = 1.0e-14;
66 size_t i;
67
68 for (i = 0; i < __arraycount(angles); i++) {
69
70 if (fabs(tan(angles[i].x) - angles[i].y) > eps)
71 atf_tc_fail_nonfatal("tan(%d deg) != %0.01f",
72 angles[i].angle, angles[i].y);
73 }
74 }
75
76 ATF_TC(tan_nan);
ATF_TC_HEAD(tan_nan,tc)77 ATF_TC_HEAD(tan_nan, tc)
78 {
79 atf_tc_set_md_var(tc, "descr", "Test tan(NaN) == NaN");
80 }
81
ATF_TC_BODY(tan_nan,tc)82 ATF_TC_BODY(tan_nan, tc)
83 {
84 const double x = 0.0L / 0.0L;
85
86 ATF_CHECK(isnan(x) != 0);
87 ATF_CHECK(isnan(tan(x)) != 0);
88 }
89
90 ATF_TC(tan_inf_neg);
ATF_TC_HEAD(tan_inf_neg,tc)91 ATF_TC_HEAD(tan_inf_neg, tc)
92 {
93 atf_tc_set_md_var(tc, "descr", "Test tan(-Inf) == NaN");
94 }
95
ATF_TC_BODY(tan_inf_neg,tc)96 ATF_TC_BODY(tan_inf_neg, tc)
97 {
98 const double x = -1.0L / 0.0L;
99
100 ATF_CHECK(isnan(tan(x)) != 0);
101 }
102
103 ATF_TC(tan_inf_pos);
ATF_TC_HEAD(tan_inf_pos,tc)104 ATF_TC_HEAD(tan_inf_pos, tc)
105 {
106 atf_tc_set_md_var(tc, "descr", "Test tan(+Inf) == NaN");
107 }
108
ATF_TC_BODY(tan_inf_pos,tc)109 ATF_TC_BODY(tan_inf_pos, tc)
110 {
111 const double x = 1.0L / 0.0L;
112
113 ATF_CHECK(isnan(tan(x)) != 0);
114 }
115
116
117 ATF_TC(tan_zero_neg);
ATF_TC_HEAD(tan_zero_neg,tc)118 ATF_TC_HEAD(tan_zero_neg, tc)
119 {
120 atf_tc_set_md_var(tc, "descr", "Test tan(-0.0) == -0.0");
121 }
122
ATF_TC_BODY(tan_zero_neg,tc)123 ATF_TC_BODY(tan_zero_neg, tc)
124 {
125 const double x = -0.0L;
126
127 ATF_CHECK(tan(x) == x);
128 }
129
130 ATF_TC(tan_zero_pos);
ATF_TC_HEAD(tan_zero_pos,tc)131 ATF_TC_HEAD(tan_zero_pos, tc)
132 {
133 atf_tc_set_md_var(tc, "descr", "Test tan(+0.0) == +0.0");
134 }
135
ATF_TC_BODY(tan_zero_pos,tc)136 ATF_TC_BODY(tan_zero_pos, tc)
137 {
138 const double x = 0.0L;
139
140 ATF_CHECK(tan(x) == x);
141 }
142
143 /*
144 * tanf(3)
145 */
146 ATF_TC(tanf_angles);
ATF_TC_HEAD(tanf_angles,tc)147 ATF_TC_HEAD(tanf_angles, tc)
148 {
149 atf_tc_set_md_var(tc, "descr", "Test some selected angles");
150 }
151
ATF_TC_BODY(tanf_angles,tc)152 ATF_TC_BODY(tanf_angles, tc)
153 {
154 const float eps = 1.0e-6;
155 float x, y;
156 size_t i;
157
158 for (i = 0; i < __arraycount(angles); i++) {
159
160 x = angles[i].x;
161 y = angles[i].y;
162
163 if (fabsf(tanf(x) - y) > eps)
164 atf_tc_fail_nonfatal("tanf(%d deg) != %0.01f",
165 angles[i].angle, angles[i].y);
166 }
167 }
168
169 ATF_TC(tanf_nan);
ATF_TC_HEAD(tanf_nan,tc)170 ATF_TC_HEAD(tanf_nan, tc)
171 {
172 atf_tc_set_md_var(tc, "descr", "Test tanf(NaN) == NaN");
173 }
174
ATF_TC_BODY(tanf_nan,tc)175 ATF_TC_BODY(tanf_nan, tc)
176 {
177 const float x = 0.0L / 0.0L;
178
179 ATF_CHECK(isnan(x) != 0);
180 ATF_CHECK(isnan(tanf(x)) != 0);
181 }
182
183 ATF_TC(tanf_inf_neg);
ATF_TC_HEAD(tanf_inf_neg,tc)184 ATF_TC_HEAD(tanf_inf_neg, tc)
185 {
186 atf_tc_set_md_var(tc, "descr", "Test tanf(-Inf) == NaN");
187 }
188
ATF_TC_BODY(tanf_inf_neg,tc)189 ATF_TC_BODY(tanf_inf_neg, tc)
190 {
191 const float x = -1.0L / 0.0L;
192
193 if (isnan(tanf(x)) == 0) {
194 atf_tc_expect_fail("PR lib/45362");
195 atf_tc_fail("tanf(-Inf) != NaN");
196 }
197 }
198
199 ATF_TC(tanf_inf_pos);
ATF_TC_HEAD(tanf_inf_pos,tc)200 ATF_TC_HEAD(tanf_inf_pos, tc)
201 {
202 atf_tc_set_md_var(tc, "descr", "Test tanf(+Inf) == NaN");
203 }
204
ATF_TC_BODY(tanf_inf_pos,tc)205 ATF_TC_BODY(tanf_inf_pos, tc)
206 {
207 const float x = 1.0L / 0.0L;
208
209 if (isnan(tanf(x)) == 0) {
210 atf_tc_expect_fail("PR lib/45362");
211 atf_tc_fail("tanf(+Inf) != NaN");
212 }
213 }
214
215
216 ATF_TC(tanf_zero_neg);
ATF_TC_HEAD(tanf_zero_neg,tc)217 ATF_TC_HEAD(tanf_zero_neg, tc)
218 {
219 atf_tc_set_md_var(tc, "descr", "Test tanf(-0.0) == -0.0");
220 }
221
ATF_TC_BODY(tanf_zero_neg,tc)222 ATF_TC_BODY(tanf_zero_neg, tc)
223 {
224 const float x = -0.0L;
225
226 ATF_CHECK(tanf(x) == x);
227 }
228
229 ATF_TC(tanf_zero_pos);
ATF_TC_HEAD(tanf_zero_pos,tc)230 ATF_TC_HEAD(tanf_zero_pos, tc)
231 {
232 atf_tc_set_md_var(tc, "descr", "Test tanf(+0.0) == +0.0");
233 }
234
ATF_TC_BODY(tanf_zero_pos,tc)235 ATF_TC_BODY(tanf_zero_pos, tc)
236 {
237 const float x = 0.0L;
238
239 ATF_CHECK(tanf(x) == x);
240 }
241
ATF_TP_ADD_TCS(tp)242 ATF_TP_ADD_TCS(tp)
243 {
244
245 ATF_TP_ADD_TC(tp, tan_angles);
246 ATF_TP_ADD_TC(tp, tan_nan);
247 ATF_TP_ADD_TC(tp, tan_inf_neg);
248 ATF_TP_ADD_TC(tp, tan_inf_pos);
249 ATF_TP_ADD_TC(tp, tan_zero_neg);
250 ATF_TP_ADD_TC(tp, tan_zero_pos);
251
252 ATF_TP_ADD_TC(tp, tanf_angles);
253 ATF_TP_ADD_TC(tp, tanf_nan);
254 ATF_TP_ADD_TC(tp, tanf_inf_neg);
255 ATF_TP_ADD_TC(tp, tanf_inf_pos);
256 ATF_TP_ADD_TC(tp, tanf_zero_neg);
257 ATF_TP_ADD_TC(tp, tanf_zero_pos);
258
259 return atf_no_error();
260 }
261