1 /* $NetBSD: t_tan.c,v 1.4 2011/09/15 11:05:50 he 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); 58 ATF_TC_HEAD(tan_angles, tc) 59 { 60 atf_tc_set_md_var(tc, "descr", "Test some selected angles"); 61 } 62 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); 77 ATF_TC_HEAD(tan_nan, tc) 78 { 79 atf_tc_set_md_var(tc, "descr", "Test tan(NaN) == NaN"); 80 } 81 82 ATF_TC_BODY(tan_nan, tc) 83 { 84 #ifndef __vax__ 85 const double x = 0.0L / 0.0L; 86 87 ATF_CHECK(isnan(x) != 0); 88 ATF_CHECK(isnan(tan(x)) != 0); 89 #endif 90 } 91 92 ATF_TC(tan_inf_neg); 93 ATF_TC_HEAD(tan_inf_neg, tc) 94 { 95 atf_tc_set_md_var(tc, "descr", "Test tan(-Inf) == NaN"); 96 } 97 98 ATF_TC_BODY(tan_inf_neg, tc) 99 { 100 #ifndef __vax__ 101 const double x = -1.0L / 0.0L; 102 103 ATF_CHECK(isnan(tan(x)) != 0); 104 #endif 105 } 106 107 ATF_TC(tan_inf_pos); 108 ATF_TC_HEAD(tan_inf_pos, tc) 109 { 110 atf_tc_set_md_var(tc, "descr", "Test tan(+Inf) == NaN"); 111 } 112 113 ATF_TC_BODY(tan_inf_pos, tc) 114 { 115 #ifndef __vax__ 116 const double x = 1.0L / 0.0L; 117 118 ATF_CHECK(isnan(tan(x)) != 0); 119 #endif 120 } 121 122 123 ATF_TC(tan_zero_neg); 124 ATF_TC_HEAD(tan_zero_neg, tc) 125 { 126 atf_tc_set_md_var(tc, "descr", "Test tan(-0.0) == -0.0"); 127 } 128 129 ATF_TC_BODY(tan_zero_neg, tc) 130 { 131 #ifndef __vax__ 132 const double x = -0.0L; 133 134 ATF_CHECK(tan(x) == x); 135 #endif 136 } 137 138 ATF_TC(tan_zero_pos); 139 ATF_TC_HEAD(tan_zero_pos, tc) 140 { 141 atf_tc_set_md_var(tc, "descr", "Test tan(+0.0) == +0.0"); 142 } 143 144 ATF_TC_BODY(tan_zero_pos, tc) 145 { 146 #ifndef __vax__ 147 const double x = 0.0L; 148 149 ATF_CHECK(tan(x) == x); 150 #endif 151 } 152 153 /* 154 * tanf(3) 155 */ 156 ATF_TC(tanf_angles); 157 ATF_TC_HEAD(tanf_angles, tc) 158 { 159 atf_tc_set_md_var(tc, "descr", "Test some selected angles"); 160 } 161 162 ATF_TC_BODY(tanf_angles, tc) 163 { 164 #ifndef __vax__ 165 const float eps = 1.0e-6; 166 float x, y; 167 size_t i; 168 169 for (i = 0; i < __arraycount(angles); i++) { 170 171 x = angles[i].x; 172 y = angles[i].y; 173 174 if (fabsf(tanf(x) - y) > eps) 175 atf_tc_fail_nonfatal("tanf(%d deg) != %0.01f", 176 angles[i].angle, angles[i].y); 177 } 178 #endif 179 } 180 181 ATF_TC(tanf_nan); 182 ATF_TC_HEAD(tanf_nan, tc) 183 { 184 atf_tc_set_md_var(tc, "descr", "Test tanf(NaN) == NaN"); 185 } 186 187 ATF_TC_BODY(tanf_nan, tc) 188 { 189 #ifndef __vax__ 190 const float x = 0.0L / 0.0L; 191 192 ATF_CHECK(isnan(x) != 0); 193 ATF_CHECK(isnan(tanf(x)) != 0); 194 #endif 195 } 196 197 ATF_TC(tanf_inf_neg); 198 ATF_TC_HEAD(tanf_inf_neg, tc) 199 { 200 atf_tc_set_md_var(tc, "descr", "Test tanf(-Inf) == NaN"); 201 } 202 203 ATF_TC_BODY(tanf_inf_neg, tc) 204 { 205 #ifndef __vax__ 206 const float x = -1.0L / 0.0L; 207 208 if (isnan(tanf(x)) == 0) { 209 atf_tc_expect_fail("PR lib/45362"); 210 atf_tc_fail("tanf(-Inf) != NaN"); 211 } 212 #endif 213 } 214 215 ATF_TC(tanf_inf_pos); 216 ATF_TC_HEAD(tanf_inf_pos, tc) 217 { 218 atf_tc_set_md_var(tc, "descr", "Test tanf(+Inf) == NaN"); 219 } 220 221 ATF_TC_BODY(tanf_inf_pos, tc) 222 { 223 #ifndef __vax__ 224 const float x = 1.0L / 0.0L; 225 226 if (isnan(tanf(x)) == 0) { 227 atf_tc_expect_fail("PR lib/45362"); 228 atf_tc_fail("tanf(+Inf) != NaN"); 229 } 230 #endif 231 } 232 233 234 ATF_TC(tanf_zero_neg); 235 ATF_TC_HEAD(tanf_zero_neg, tc) 236 { 237 atf_tc_set_md_var(tc, "descr", "Test tanf(-0.0) == -0.0"); 238 } 239 240 ATF_TC_BODY(tanf_zero_neg, tc) 241 { 242 #ifndef __vax__ 243 const float x = -0.0L; 244 245 ATF_CHECK(tanf(x) == x); 246 #endif 247 } 248 249 ATF_TC(tanf_zero_pos); 250 ATF_TC_HEAD(tanf_zero_pos, tc) 251 { 252 atf_tc_set_md_var(tc, "descr", "Test tanf(+0.0) == +0.0"); 253 } 254 255 ATF_TC_BODY(tanf_zero_pos, tc) 256 { 257 #ifndef __vax__ 258 const float x = 0.0L; 259 260 ATF_CHECK(tanf(x) == x); 261 #endif 262 } 263 264 ATF_TP_ADD_TCS(tp) 265 { 266 267 ATF_TP_ADD_TC(tp, tan_angles); 268 ATF_TP_ADD_TC(tp, tan_nan); 269 ATF_TP_ADD_TC(tp, tan_inf_neg); 270 ATF_TP_ADD_TC(tp, tan_inf_pos); 271 ATF_TP_ADD_TC(tp, tan_zero_neg); 272 ATF_TP_ADD_TC(tp, tan_zero_pos); 273 274 ATF_TP_ADD_TC(tp, tanf_angles); 275 ATF_TP_ADD_TC(tp, tanf_nan); 276 ATF_TP_ADD_TC(tp, tanf_inf_neg); 277 ATF_TP_ADD_TC(tp, tanf_inf_pos); 278 ATF_TP_ADD_TC(tp, tanf_zero_neg); 279 ATF_TP_ADD_TC(tp, tanf_zero_pos); 280 281 return atf_no_error(); 282 } 283