1 /* $NetBSD: t_sin.c,v 1.7 2019/05/27 00:24:37 maya 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 <assert.h>
33 #include <atf-c.h>
34 #include <float.h>
35 #include <math.h>
36
37 static const struct {
38 int angle;
39 double x;
40 double y;
41 float fy;
42 } angles[] = {
43 { -360, -6.283185307179586, 2.4492935982947064e-16, -1.7484555e-07 },
44 { -180, -3.141592653589793, -1.2246467991473532e-16, 8.7422777e-08 },
45 { -135, -2.356194490192345, -0.7071067811865476, 999 },
46 { -90, -1.570796326794897, -1.0000000000000000, 999 },
47 { -45, -0.785398163397448, -0.7071067811865472, 999 },
48 { 0, 0.000000000000000, 0.0000000000000000, 999 },
49 { 30, 0.5235987755982989, 0.5000000000000000, 999 },
50 { 45, 0.785398163397448, 0.7071067811865472, 999 },
51 { 60, 1.047197551196598, 0.8660254037844388, 999 },
52 { 90, 1.570796326794897, 1.0000000000000000, 999 },
53 { 120, 2.094395102393195, 0.8660254037844389, 999 },
54 { 135, 2.356194490192345, 0.7071067811865476, 999 },
55 { 150, 2.617993877991494, 0.5000000000000003, 999 },
56 { 180, 3.141592653589793, 1.2246467991473532e-16, -8.7422777e-08 },
57 { 270, 4.712388980384690, -1.0000000000000000, 999 },
58 { 360, 6.283185307179586, -2.4492935982947064e-16, 1.7484555e-07 },
59 };
60
61 /*
62 * sin(3)
63 */
64 ATF_TC(sin_angles);
ATF_TC_HEAD(sin_angles,tc)65 ATF_TC_HEAD(sin_angles, tc)
66 {
67 atf_tc_set_md_var(tc, "descr", "Test some selected angles");
68 }
69
ATF_TC_BODY(sin_angles,tc)70 ATF_TC_BODY(sin_angles, tc)
71 {
72 const double eps = DBL_EPSILON;
73 size_t i;
74
75 for (i = 0; i < __arraycount(angles); i++) {
76 int deg = angles[i].angle;
77 double theta = angles[i].x;
78 double sin_theta = angles[i].y;
79 bool ok;
80
81 if (sin_theta == 0) {
82 /* Should be computed exactly. */
83 assert(sin_theta == 0);
84 ok = (sin(theta) == 0);
85 } else {
86 assert(sin_theta != 0);
87 ok = (fabs((sin(theta) - sin_theta)/sin_theta) <= eps);
88 }
89
90 if (!ok) {
91 atf_tc_fail_nonfatal("sin(%d deg = %.17g) = %.17g"
92 " != %.17g",
93 deg, theta, sin(theta), sin_theta);
94 }
95 }
96 }
97
98 ATF_TC(sin_nan);
ATF_TC_HEAD(sin_nan,tc)99 ATF_TC_HEAD(sin_nan, tc)
100 {
101 atf_tc_set_md_var(tc, "descr", "Test sin(NaN) == NaN");
102 }
103
ATF_TC_BODY(sin_nan,tc)104 ATF_TC_BODY(sin_nan, tc)
105 {
106 const double x = 0.0L / 0.0L;
107
108 ATF_CHECK(isnan(x) != 0);
109 ATF_CHECK(isnan(sin(x)) != 0);
110 }
111
112 ATF_TC(sin_inf_neg);
ATF_TC_HEAD(sin_inf_neg,tc)113 ATF_TC_HEAD(sin_inf_neg, tc)
114 {
115 atf_tc_set_md_var(tc, "descr", "Test sin(-Inf) == NaN");
116 }
117
ATF_TC_BODY(sin_inf_neg,tc)118 ATF_TC_BODY(sin_inf_neg, tc)
119 {
120 const double x = -1.0L / 0.0L;
121
122 ATF_CHECK(isnan(sin(x)) != 0);
123 }
124
125 ATF_TC(sin_inf_pos);
ATF_TC_HEAD(sin_inf_pos,tc)126 ATF_TC_HEAD(sin_inf_pos, tc)
127 {
128 atf_tc_set_md_var(tc, "descr", "Test sin(+Inf) == NaN");
129 }
130
ATF_TC_BODY(sin_inf_pos,tc)131 ATF_TC_BODY(sin_inf_pos, tc)
132 {
133 const double x = 1.0L / 0.0L;
134
135 ATF_CHECK(isnan(sin(x)) != 0);
136 }
137
138
139 ATF_TC(sin_zero_neg);
ATF_TC_HEAD(sin_zero_neg,tc)140 ATF_TC_HEAD(sin_zero_neg, tc)
141 {
142 atf_tc_set_md_var(tc, "descr", "Test sin(-0.0) == -0.0");
143 }
144
ATF_TC_BODY(sin_zero_neg,tc)145 ATF_TC_BODY(sin_zero_neg, tc)
146 {
147 const double x = -0.0L;
148
149 ATF_CHECK(sin(x) == x);
150 }
151
152 ATF_TC(sin_zero_pos);
ATF_TC_HEAD(sin_zero_pos,tc)153 ATF_TC_HEAD(sin_zero_pos, tc)
154 {
155 atf_tc_set_md_var(tc, "descr", "Test sin(+0.0) == +0.0");
156 }
157
ATF_TC_BODY(sin_zero_pos,tc)158 ATF_TC_BODY(sin_zero_pos, tc)
159 {
160 const double x = 0.0L;
161
162 ATF_CHECK(sin(x) == x);
163 }
164
165 /*
166 * sinf(3)
167 */
168 ATF_TC(sinf_angles);
ATF_TC_HEAD(sinf_angles,tc)169 ATF_TC_HEAD(sinf_angles, tc)
170 {
171 atf_tc_set_md_var(tc, "descr", "Test some selected angles");
172 }
173
ATF_TC_BODY(sinf_angles,tc)174 ATF_TC_BODY(sinf_angles, tc)
175 {
176 const float eps = FLT_EPSILON;
177 size_t i;
178
179 for (i = 0; i < __arraycount(angles); i++) {
180 int deg = angles[i].angle;
181 float theta = angles[i].x;
182 float sin_theta = angles[i].fy;
183 bool ok;
184
185 if (sin_theta == 999)
186 sin_theta = angles[i].y;
187
188 if (sin_theta == 0) {
189 /* Should be computed exactly. */
190 ok = (sinf(theta) == 0);
191 } else {
192 ok = (fabsf((sinf(theta) - sin_theta)/sin_theta)
193 <= eps);
194 }
195
196 if (!ok) {
197 atf_tc_fail_nonfatal("sinf(%d deg) = %.8g != %.8g",
198 deg, sinf(theta), sin_theta);
199 }
200 }
201 }
202
203 ATF_TC(sinf_nan);
ATF_TC_HEAD(sinf_nan,tc)204 ATF_TC_HEAD(sinf_nan, tc)
205 {
206 atf_tc_set_md_var(tc, "descr", "Test sinf(NaN) == NaN");
207 }
208
ATF_TC_BODY(sinf_nan,tc)209 ATF_TC_BODY(sinf_nan, tc)
210 {
211 const float x = 0.0L / 0.0L;
212
213 ATF_CHECK(isnan(x) != 0);
214 ATF_CHECK(isnan(sinf(x)) != 0);
215 }
216
217 ATF_TC(sinf_inf_neg);
ATF_TC_HEAD(sinf_inf_neg,tc)218 ATF_TC_HEAD(sinf_inf_neg, tc)
219 {
220 atf_tc_set_md_var(tc, "descr", "Test sinf(-Inf) == NaN");
221 }
222
ATF_TC_BODY(sinf_inf_neg,tc)223 ATF_TC_BODY(sinf_inf_neg, tc)
224 {
225 const float x = -1.0L / 0.0L;
226
227 if (isnan(sinf(x)) == 0) {
228 atf_tc_expect_fail("PR lib/45362");
229 atf_tc_fail("sinf(-Inf) != NaN");
230 }
231 }
232
233 ATF_TC(sinf_inf_pos);
ATF_TC_HEAD(sinf_inf_pos,tc)234 ATF_TC_HEAD(sinf_inf_pos, tc)
235 {
236 atf_tc_set_md_var(tc, "descr", "Test sinf(+Inf) == NaN");
237 }
238
ATF_TC_BODY(sinf_inf_pos,tc)239 ATF_TC_BODY(sinf_inf_pos, tc)
240 {
241 const float x = 1.0L / 0.0L;
242
243 if (isnan(sinf(x)) == 0) {
244 atf_tc_expect_fail("PR lib/45362");
245 atf_tc_fail("sinf(+Inf) != NaN");
246 }
247 }
248
249
250 ATF_TC(sinf_zero_neg);
ATF_TC_HEAD(sinf_zero_neg,tc)251 ATF_TC_HEAD(sinf_zero_neg, tc)
252 {
253 atf_tc_set_md_var(tc, "descr", "Test sinf(-0.0) == -0.0");
254 }
255
ATF_TC_BODY(sinf_zero_neg,tc)256 ATF_TC_BODY(sinf_zero_neg, tc)
257 {
258 const float x = -0.0L;
259
260 ATF_CHECK(sinf(x) == x);
261 }
262
263 ATF_TC(sinf_zero_pos);
ATF_TC_HEAD(sinf_zero_pos,tc)264 ATF_TC_HEAD(sinf_zero_pos, tc)
265 {
266 atf_tc_set_md_var(tc, "descr", "Test sinf(+0.0) == +0.0");
267 }
268
ATF_TC_BODY(sinf_zero_pos,tc)269 ATF_TC_BODY(sinf_zero_pos, tc)
270 {
271 const float x = 0.0L;
272
273 ATF_CHECK(sinf(x) == x);
274 }
275
ATF_TP_ADD_TCS(tp)276 ATF_TP_ADD_TCS(tp)
277 {
278
279 ATF_TP_ADD_TC(tp, sin_angles);
280 ATF_TP_ADD_TC(tp, sin_nan);
281 ATF_TP_ADD_TC(tp, sin_inf_neg);
282 ATF_TP_ADD_TC(tp, sin_inf_pos);
283 ATF_TP_ADD_TC(tp, sin_zero_neg);
284 ATF_TP_ADD_TC(tp, sin_zero_pos);
285
286 ATF_TP_ADD_TC(tp, sinf_angles);
287 ATF_TP_ADD_TC(tp, sinf_nan);
288 ATF_TP_ADD_TC(tp, sinf_inf_neg);
289 ATF_TP_ADD_TC(tp, sinf_inf_pos);
290 ATF_TP_ADD_TC(tp, sinf_zero_neg);
291 ATF_TP_ADD_TC(tp, sinf_zero_pos);
292
293 return atf_no_error();
294 }
295