1 /* $NetBSD: t_sqrt.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_sqrt.c,v 1.6 2014/03/03 10:39:08 martin Exp $"); 33 34 #include <atf-c.h> 35 #include <math.h> 36 #include <float.h> 37 #include <stdio.h> 38 39 /* 40 * sqrt(3) 41 */ 42 ATF_TC(sqrt_nan); 43 ATF_TC_HEAD(sqrt_nan, tc) 44 { 45 atf_tc_set_md_var(tc, "descr", "Test sqrt(NaN) == NaN"); 46 } 47 48 ATF_TC_BODY(sqrt_nan, tc) 49 { 50 const double x = 0.0L / 0.0L; 51 52 ATF_CHECK(isnan(x) != 0); 53 ATF_CHECK(isnan(sqrt(x)) != 0); 54 } 55 56 ATF_TC(sqrt_pow); 57 ATF_TC_HEAD(sqrt_pow, tc) 58 { 59 atf_tc_set_md_var(tc, "descr", "Test sqrt(3) vs. pow(3)"); 60 } 61 62 ATF_TC_BODY(sqrt_pow, tc) 63 { 64 const double x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.9999 }; 65 const double eps = 1.0e-40; 66 double y, z; 67 size_t i; 68 69 for (i = 0; i < __arraycount(x); i++) { 70 71 y = sqrt(x[i]); 72 z = pow(x[i], 1.0 / 2.0); 73 74 if (fabs(y - z) > eps) 75 atf_tc_fail_nonfatal("sqrt(%0.03f) != " 76 "pow(%0.03f, 1/2)\n", x[i], x[i]); 77 } 78 } 79 80 ATF_TC(sqrt_inf_neg); 81 ATF_TC_HEAD(sqrt_inf_neg, tc) 82 { 83 atf_tc_set_md_var(tc, "descr", "Test sqrt(-Inf) == NaN"); 84 } 85 86 ATF_TC_BODY(sqrt_inf_neg, tc) 87 { 88 const double x = -1.0L / 0.0L; 89 double y = sqrt(x); 90 91 ATF_CHECK(isnan(y) != 0); 92 } 93 94 ATF_TC(sqrt_inf_pos); 95 ATF_TC_HEAD(sqrt_inf_pos, tc) 96 { 97 atf_tc_set_md_var(tc, "descr", "Test sqrt(+Inf) == +Inf"); 98 } 99 100 ATF_TC_BODY(sqrt_inf_pos, tc) 101 { 102 const double x = 1.0L / 0.0L; 103 double y = sqrt(x); 104 105 ATF_CHECK(isinf(y) != 0); 106 ATF_CHECK(signbit(y) == 0); 107 } 108 109 ATF_TC(sqrt_zero_neg); 110 ATF_TC_HEAD(sqrt_zero_neg, tc) 111 { 112 atf_tc_set_md_var(tc, "descr", "Test sqrt(-0.0) == -0.0"); 113 } 114 115 ATF_TC_BODY(sqrt_zero_neg, tc) 116 { 117 const double x = -0.0L; 118 double y = sqrt(x); 119 120 if (fabs(y) > 0.0 || signbit(y) == 0) 121 atf_tc_fail_nonfatal("sqrt(-0.0) != -0.0"); 122 } 123 124 ATF_TC(sqrt_zero_pos); 125 ATF_TC_HEAD(sqrt_zero_pos, tc) 126 { 127 atf_tc_set_md_var(tc, "descr", "Test sqrt(+0.0) == +0.0"); 128 } 129 130 ATF_TC_BODY(sqrt_zero_pos, tc) 131 { 132 const double x = 0.0L; 133 double y = sqrt(x); 134 135 if (fabs(y) > 0.0 || signbit(y) != 0) 136 atf_tc_fail_nonfatal("sqrt(+0.0) != +0.0"); 137 } 138 139 /* 140 * sqrtf(3) 141 */ 142 ATF_TC(sqrtf_nan); 143 ATF_TC_HEAD(sqrtf_nan, tc) 144 { 145 atf_tc_set_md_var(tc, "descr", "Test sqrtf(NaN) == NaN"); 146 } 147 148 ATF_TC_BODY(sqrtf_nan, tc) 149 { 150 const float x = 0.0L / 0.0L; 151 152 ATF_CHECK(isnan(x) != 0); 153 ATF_CHECK(isnan(sqrtf(x)) != 0); 154 } 155 156 ATF_TC(sqrtf_powf); 157 ATF_TC_HEAD(sqrtf_powf, tc) 158 { 159 atf_tc_set_md_var(tc, "descr", "Test sqrtf(3) vs. powf(3)"); 160 } 161 162 ATF_TC_BODY(sqrtf_powf, tc) 163 { 164 const float x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.9999 }; 165 const float eps = 1.0e-30; 166 volatile float y, z; 167 size_t i; 168 169 for (i = 0; i < __arraycount(x); i++) { 170 171 y = sqrtf(x[i]); 172 z = powf(x[i], 1.0 / 2.0); 173 174 if (fabsf(y - z) > eps) 175 atf_tc_fail_nonfatal("sqrtf(%0.03f) != " 176 "powf(%0.03f, 1/2)\n", x[i], x[i]); 177 } 178 } 179 180 ATF_TC(sqrtf_inf_neg); 181 ATF_TC_HEAD(sqrtf_inf_neg, tc) 182 { 183 atf_tc_set_md_var(tc, "descr", "Test sqrtf(-Inf) == NaN"); 184 } 185 186 ATF_TC_BODY(sqrtf_inf_neg, tc) 187 { 188 const float x = -1.0L / 0.0L; 189 float y = sqrtf(x); 190 191 ATF_CHECK(isnan(y) != 0); 192 } 193 194 ATF_TC(sqrtf_inf_pos); 195 ATF_TC_HEAD(sqrtf_inf_pos, tc) 196 { 197 atf_tc_set_md_var(tc, "descr", "Test sqrtf(+Inf) == +Inf"); 198 } 199 200 ATF_TC_BODY(sqrtf_inf_pos, tc) 201 { 202 const float x = 1.0L / 0.0L; 203 float y = sqrtf(x); 204 205 ATF_CHECK(isinf(y) != 0); 206 ATF_CHECK(signbit(y) == 0); 207 } 208 209 ATF_TC(sqrtf_zero_neg); 210 ATF_TC_HEAD(sqrtf_zero_neg, tc) 211 { 212 atf_tc_set_md_var(tc, "descr", "Test sqrtf(-0.0) == -0.0"); 213 } 214 215 ATF_TC_BODY(sqrtf_zero_neg, tc) 216 { 217 const float x = -0.0L; 218 float y = sqrtf(x); 219 220 if (fabsf(y) > 0.0 || signbit(y) == 0) 221 atf_tc_fail_nonfatal("sqrtf(-0.0) != -0.0"); 222 } 223 224 ATF_TC(sqrtf_zero_pos); 225 ATF_TC_HEAD(sqrtf_zero_pos, tc) 226 { 227 atf_tc_set_md_var(tc, "descr", "Test sqrtf(+0.0) == +0.0"); 228 } 229 230 ATF_TC_BODY(sqrtf_zero_pos, tc) 231 { 232 const float x = 0.0L; 233 float y = sqrtf(x); 234 235 if (fabsf(y) > 0.0 || signbit(y) != 0) 236 atf_tc_fail_nonfatal("sqrtf(+0.0) != +0.0"); 237 } 238 239 /* 240 * sqrtl(3) 241 */ 242 ATF_TC(sqrtl_nan); 243 ATF_TC_HEAD(sqrtl_nan, tc) 244 { 245 atf_tc_set_md_var(tc, "descr", "Test sqrtl(NaN) == NaN"); 246 } 247 248 ATF_TC_BODY(sqrtl_nan, tc) 249 { 250 const long double x = 0.0L / 0.0L; 251 252 ATF_CHECK(isnan(x) != 0); 253 ATF_CHECK(isnan(sqrtl(x)) != 0); 254 } 255 256 ATF_TC(sqrtl_powl); 257 ATF_TC_HEAD(sqrtl_powl, tc) 258 { 259 atf_tc_set_md_var(tc, "descr", "Test sqrtl(3) vs. powl(3)"); 260 } 261 262 ATF_TC_BODY(sqrtl_powl, tc) 263 { 264 const long double x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.9999 }; 265 const long double eps = 5.0*DBL_EPSILON; /* XXX powl == pow for now */ 266 volatile long double y, z; 267 size_t i; 268 269 for (i = 0; i < __arraycount(x); i++) { 270 271 y = sqrtl(x[i]); 272 z = powl(x[i], 1.0 / 2.0); 273 274 if (fabsl(y - z) > eps) 275 atf_tc_fail_nonfatal("sqrtl(%0.03Lf) != " 276 "powl(%0.03Lf, 1/2)\n", x[i], x[i]); 277 } 278 } 279 280 ATF_TC(sqrtl_inf_neg); 281 ATF_TC_HEAD(sqrtl_inf_neg, tc) 282 { 283 atf_tc_set_md_var(tc, "descr", "Test sqrtl(-Inf) == NaN"); 284 } 285 286 ATF_TC_BODY(sqrtl_inf_neg, tc) 287 { 288 const long double x = -1.0L / 0.0L; 289 long double y = sqrtl(x); 290 291 ATF_CHECK(isnan(y) != 0); 292 } 293 294 ATF_TC(sqrtl_inf_pos); 295 ATF_TC_HEAD(sqrtl_inf_pos, tc) 296 { 297 atf_tc_set_md_var(tc, "descr", "Test sqrtl(+Inf) == +Inf"); 298 } 299 300 ATF_TC_BODY(sqrtl_inf_pos, tc) 301 { 302 const long double x = 1.0L / 0.0L; 303 long double y = sqrtl(x); 304 305 ATF_CHECK(isinf(y) != 0); 306 ATF_CHECK(signbit(y) == 0); 307 } 308 309 ATF_TC(sqrtl_zero_neg); 310 ATF_TC_HEAD(sqrtl_zero_neg, tc) 311 { 312 atf_tc_set_md_var(tc, "descr", "Test sqrtl(-0.0) == -0.0"); 313 } 314 315 ATF_TC_BODY(sqrtl_zero_neg, tc) 316 { 317 const long double x = -0.0L; 318 long double y = sqrtl(x); 319 320 if (fabsl(y) > 0.0 || signbit(y) == 0) 321 atf_tc_fail_nonfatal("sqrtl(-0.0) != -0.0"); 322 } 323 324 ATF_TC(sqrtl_zero_pos); 325 ATF_TC_HEAD(sqrtl_zero_pos, tc) 326 { 327 atf_tc_set_md_var(tc, "descr", "Test sqrtl(+0.0) == +0.0"); 328 } 329 330 ATF_TC_BODY(sqrtl_zero_pos, tc) 331 { 332 const long double x = 0.0L; 333 long double y = sqrtl(x); 334 335 if (fabsl(y) > 0.0 || signbit(y) != 0) 336 atf_tc_fail_nonfatal("sqrtl(+0.0) != +0.0"); 337 } 338 339 ATF_TP_ADD_TCS(tp) 340 { 341 342 ATF_TP_ADD_TC(tp, sqrt_nan); 343 ATF_TP_ADD_TC(tp, sqrt_pow); 344 ATF_TP_ADD_TC(tp, sqrt_inf_neg); 345 ATF_TP_ADD_TC(tp, sqrt_inf_pos); 346 ATF_TP_ADD_TC(tp, sqrt_zero_neg); 347 ATF_TP_ADD_TC(tp, sqrt_zero_pos); 348 349 ATF_TP_ADD_TC(tp, sqrtf_nan); 350 ATF_TP_ADD_TC(tp, sqrtf_powf); 351 ATF_TP_ADD_TC(tp, sqrtf_inf_neg); 352 ATF_TP_ADD_TC(tp, sqrtf_inf_pos); 353 ATF_TP_ADD_TC(tp, sqrtf_zero_neg); 354 ATF_TP_ADD_TC(tp, sqrtf_zero_pos); 355 356 ATF_TP_ADD_TC(tp, sqrtl_nan); 357 ATF_TP_ADD_TC(tp, sqrtl_powl); 358 ATF_TP_ADD_TC(tp, sqrtl_inf_neg); 359 ATF_TP_ADD_TC(tp, sqrtl_inf_pos); 360 ATF_TP_ADD_TC(tp, sqrtl_zero_neg); 361 ATF_TP_ADD_TC(tp, sqrtl_zero_pos); 362 363 return atf_no_error(); 364 } 365