1 /* $NetBSD: t_cos.c,v 1.4 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, -1.0000000000000000 }, 41 { -135, -2.356194490192345, -0.7071067811865476 }, 42 { -90, -1.570796326794897, 0.0000000000000000 }, 43 { -45, -0.785398163397448, 0.7071067811865476 }, 44 { 0, 0.000000000000000, 1.0000000000000000 }, 45 { 30, 0.523598775598299, 0.8660254037844386 }, 46 { 45, 0.785398163397448, 0.7071067811865476 }, 47 { 60, 1.047197551196598, 0.5000000000000000 }, 48 { 90, 1.570796326794897, 0.0000000000000000 }, 49 { 120, 2.094395102393195, -0.5000000000000000 }, 50 { 135, 2.356194490192345, -0.7071067811865476 }, 51 { 150, 2.617993877991494, -0.8660254037844386 }, 52 { 180, 3.141592653589793, -1.0000000000000000 }, 53 { 270, 4.712388980384690, 0.0000000000000000 }, 54 { 360, 6.283185307179586, 1.0000000000000000 } 55 }; 56 57 /* 58 * cos(3) 59 */ 60 ATF_TC(cos_angles); 61 ATF_TC_HEAD(cos_angles, tc) 62 { 63 atf_tc_set_md_var(tc, "descr", "Test some selected angles"); 64 } 65 66 ATF_TC_BODY(cos_angles, tc) 67 { 68 const double eps = 1.0e-15; 69 size_t i; 70 71 for (i = 0; i < __arraycount(angles); i++) { 72 73 if (fabs(cos(angles[i].x) - angles[i].y) > eps) 74 atf_tc_fail_nonfatal("cos(%d deg) != %0.01f", 75 angles[i].angle, angles[i].y); 76 } 77 } 78 79 ATF_TC(cos_nan); 80 ATF_TC_HEAD(cos_nan, tc) 81 { 82 atf_tc_set_md_var(tc, "descr", "Test cos(NaN) == NaN"); 83 } 84 85 ATF_TC_BODY(cos_nan, tc) 86 { 87 const double x = 0.0L / 0.0L; 88 89 ATF_CHECK(isnan(x) != 0); 90 ATF_CHECK(isnan(cos(x)) != 0); 91 } 92 93 ATF_TC(cos_inf_neg); 94 ATF_TC_HEAD(cos_inf_neg, tc) 95 { 96 atf_tc_set_md_var(tc, "descr", "Test cos(-Inf) == NaN"); 97 } 98 99 ATF_TC_BODY(cos_inf_neg, tc) 100 { 101 const double x = -1.0L / 0.0L; 102 103 ATF_CHECK(isnan(cos(x)) != 0); 104 } 105 106 ATF_TC(cos_inf_pos); 107 ATF_TC_HEAD(cos_inf_pos, tc) 108 { 109 atf_tc_set_md_var(tc, "descr", "Test cos(+Inf) == NaN"); 110 } 111 112 ATF_TC_BODY(cos_inf_pos, tc) 113 { 114 const double x = 1.0L / 0.0L; 115 116 ATF_CHECK(isnan(cos(x)) != 0); 117 } 118 119 120 ATF_TC(cos_zero_neg); 121 ATF_TC_HEAD(cos_zero_neg, tc) 122 { 123 atf_tc_set_md_var(tc, "descr", "Test cos(-0.0) == 1.0"); 124 } 125 126 ATF_TC_BODY(cos_zero_neg, tc) 127 { 128 const double x = -0.0L; 129 130 ATF_CHECK(cos(x) == 1.0); 131 } 132 133 ATF_TC(cos_zero_pos); 134 ATF_TC_HEAD(cos_zero_pos, tc) 135 { 136 atf_tc_set_md_var(tc, "descr", "Test cos(+0.0) == 1.0"); 137 } 138 139 ATF_TC_BODY(cos_zero_pos, tc) 140 { 141 const double x = 0.0L; 142 143 ATF_CHECK(cos(x) == 1.0); 144 } 145 146 /* 147 * cosf(3) 148 */ 149 ATF_TC(cosf_angles); 150 ATF_TC_HEAD(cosf_angles, tc) 151 { 152 atf_tc_set_md_var(tc, "descr", "Test some selected angles"); 153 } 154 155 ATF_TC_BODY(cosf_angles, tc) 156 { 157 const float eps = 1.0e-7; 158 float x, y; 159 size_t i; 160 161 for (i = 0; i < __arraycount(angles); i++) { 162 163 x = angles[i].x; 164 y = angles[i].y; 165 166 if (fabsf(cosf(x) - y) > eps) 167 atf_tc_fail_nonfatal("cosf(%d deg) != %0.01f", 168 angles[i].angle, angles[i].y); 169 } 170 } 171 172 ATF_TC(cosf_nan); 173 ATF_TC_HEAD(cosf_nan, tc) 174 { 175 atf_tc_set_md_var(tc, "descr", "Test cosf(NaN) == NaN"); 176 } 177 178 ATF_TC_BODY(cosf_nan, tc) 179 { 180 const float x = 0.0L / 0.0L; 181 182 ATF_CHECK(isnan(x) != 0); 183 ATF_CHECK(isnan(cosf(x)) != 0); 184 } 185 186 ATF_TC(cosf_inf_neg); 187 ATF_TC_HEAD(cosf_inf_neg, tc) 188 { 189 atf_tc_set_md_var(tc, "descr", "Test cosf(-Inf) == NaN"); 190 } 191 192 ATF_TC_BODY(cosf_inf_neg, tc) 193 { 194 const float x = -1.0L / 0.0L; 195 196 if (isnan(cosf(x)) == 0) { 197 atf_tc_expect_fail("PR lib/45362"); 198 atf_tc_fail("cosf(-Inf) != NaN"); 199 } 200 } 201 202 ATF_TC(cosf_inf_pos); 203 ATF_TC_HEAD(cosf_inf_pos, tc) 204 { 205 atf_tc_set_md_var(tc, "descr", "Test cosf(+Inf) == NaN"); 206 } 207 208 ATF_TC_BODY(cosf_inf_pos, tc) 209 { 210 const float x = 1.0L / 0.0L; 211 212 if (isnan(cosf(x)) == 0) { 213 atf_tc_expect_fail("PR lib/45362"); 214 atf_tc_fail("cosf(+Inf) != NaN"); 215 } 216 } 217 218 219 ATF_TC(cosf_zero_neg); 220 ATF_TC_HEAD(cosf_zero_neg, tc) 221 { 222 atf_tc_set_md_var(tc, "descr", "Test cosf(-0.0) == 1.0"); 223 } 224 225 ATF_TC_BODY(cosf_zero_neg, tc) 226 { 227 const float x = -0.0L; 228 229 ATF_CHECK(cosf(x) == 1.0); 230 } 231 232 ATF_TC(cosf_zero_pos); 233 ATF_TC_HEAD(cosf_zero_pos, tc) 234 { 235 atf_tc_set_md_var(tc, "descr", "Test cosf(+0.0) == 1.0"); 236 } 237 238 ATF_TC_BODY(cosf_zero_pos, tc) 239 { 240 const float x = 0.0L; 241 242 ATF_CHECK(cosf(x) == 1.0); 243 } 244 245 ATF_TP_ADD_TCS(tp) 246 { 247 248 ATF_TP_ADD_TC(tp, cos_angles); 249 ATF_TP_ADD_TC(tp, cos_nan); 250 ATF_TP_ADD_TC(tp, cos_inf_neg); 251 ATF_TP_ADD_TC(tp, cos_inf_pos); 252 ATF_TP_ADD_TC(tp, cos_zero_neg); 253 ATF_TP_ADD_TC(tp, cos_zero_pos); 254 255 ATF_TP_ADD_TC(tp, cosf_angles); 256 ATF_TP_ADD_TC(tp, cosf_nan); 257 ATF_TP_ADD_TC(tp, cosf_inf_neg); 258 ATF_TP_ADD_TC(tp, cosf_inf_pos); 259 ATF_TP_ADD_TC(tp, cosf_zero_neg); 260 ATF_TP_ADD_TC(tp, cosf_zero_pos); 261 262 return atf_no_error(); 263 } 264