t_sqrt.c revision 1.4
1 /* $NetBSD: t_sqrt.c,v 1.4 2013/11/19 19:24:33 joerg 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 1.4 2013/11/19 19:24:33 joerg Exp $"); 33 34 #include <atf-c.h> 35 #include <math.h> 36 #include <stdio.h> 37 38 /* 39 * sqrt(3) 40 */ 41 ATF_TC(sqrt_nan); 42 ATF_TC_HEAD(sqrt_nan, tc) 43 { 44 atf_tc_set_md_var(tc, "descr", "Test sqrt(NaN) == NaN"); 45 } 46 47 ATF_TC_BODY(sqrt_nan, tc) 48 { 49 #ifndef __vax__ 50 const double x = 0.0L / 0.0L; 51 52 ATF_CHECK(isnan(x) != 0); 53 ATF_CHECK(isnan(sqrt(x)) != 0); 54 #endif 55 } 56 57 ATF_TC(sqrt_pow); 58 ATF_TC_HEAD(sqrt_pow, tc) 59 { 60 atf_tc_set_md_var(tc, "descr", "Test sqrt(3) vs. pow(3)"); 61 } 62 63 ATF_TC_BODY(sqrt_pow, tc) 64 { 65 #ifndef __vax__ 66 const double x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.9999 }; 67 const double eps = 1.0e-40; 68 double y, z; 69 size_t i; 70 71 for (i = 0; i < __arraycount(x); i++) { 72 73 y = sqrt(x[i]); 74 z = pow(x[i], 1.0 / 2.0); 75 76 if (fabs(y - z) > eps) 77 atf_tc_fail_nonfatal("sqrt(%0.03f) != " 78 "pow(%0.03f, 1/2)\n", x[i], x[i]); 79 } 80 #endif 81 } 82 83 ATF_TC(sqrt_inf_neg); 84 ATF_TC_HEAD(sqrt_inf_neg, tc) 85 { 86 atf_tc_set_md_var(tc, "descr", "Test sqrt(-Inf) == NaN"); 87 } 88 89 ATF_TC_BODY(sqrt_inf_neg, tc) 90 { 91 #ifndef __vax__ 92 const double x = -1.0L / 0.0L; 93 double y = sqrt(x); 94 95 ATF_CHECK(isnan(y) != 0); 96 #endif 97 } 98 99 ATF_TC(sqrt_inf_pos); 100 ATF_TC_HEAD(sqrt_inf_pos, tc) 101 { 102 atf_tc_set_md_var(tc, "descr", "Test sqrt(+Inf) == +Inf"); 103 } 104 105 ATF_TC_BODY(sqrt_inf_pos, tc) 106 { 107 #ifndef __vax__ 108 const double x = 1.0L / 0.0L; 109 double y = sqrt(x); 110 111 ATF_CHECK(isinf(y) != 0); 112 ATF_CHECK(signbit(y) == 0); 113 #endif 114 } 115 116 ATF_TC(sqrt_zero_neg); 117 ATF_TC_HEAD(sqrt_zero_neg, tc) 118 { 119 atf_tc_set_md_var(tc, "descr", "Test sqrt(-0.0) == -0.0"); 120 } 121 122 ATF_TC_BODY(sqrt_zero_neg, tc) 123 { 124 #ifndef __vax__ 125 const double x = -0.0L; 126 double y = sqrt(x); 127 128 if (fabs(y) > 0.0 || signbit(y) == 0) 129 atf_tc_fail_nonfatal("sqrt(-0.0) != -0.0"); 130 #endif 131 } 132 133 ATF_TC(sqrt_zero_pos); 134 ATF_TC_HEAD(sqrt_zero_pos, tc) 135 { 136 atf_tc_set_md_var(tc, "descr", "Test sqrt(+0.0) == +0.0"); 137 } 138 139 ATF_TC_BODY(sqrt_zero_pos, tc) 140 { 141 #ifndef __vax__ 142 const double x = 0.0L; 143 double y = sqrt(x); 144 145 if (fabs(y) > 0.0 || signbit(y) != 0) 146 atf_tc_fail_nonfatal("sqrt(+0.0) != +0.0"); 147 #endif 148 } 149 150 /* 151 * sqrtf(3) 152 */ 153 ATF_TC(sqrtf_nan); 154 ATF_TC_HEAD(sqrtf_nan, tc) 155 { 156 atf_tc_set_md_var(tc, "descr", "Test sqrtf(NaN) == NaN"); 157 } 158 159 ATF_TC_BODY(sqrtf_nan, tc) 160 { 161 #ifndef __vax__ 162 const float x = 0.0L / 0.0L; 163 164 ATF_CHECK(isnan(x) != 0); 165 ATF_CHECK(isnan(sqrtf(x)) != 0); 166 #endif 167 } 168 169 ATF_TC(sqrtf_powf); 170 ATF_TC_HEAD(sqrtf_powf, tc) 171 { 172 atf_tc_set_md_var(tc, "descr", "Test sqrtf(3) vs. powf(3)"); 173 } 174 175 ATF_TC_BODY(sqrtf_powf, tc) 176 { 177 #ifndef __vax__ 178 const float x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.9999 }; 179 const float eps = 1.0e-30; 180 volatile float y, z; 181 size_t i; 182 183 for (i = 0; i < __arraycount(x); i++) { 184 185 y = sqrtf(x[i]); 186 z = powf(x[i], 1.0 / 2.0); 187 188 if (fabsf(y - z) > eps) 189 atf_tc_fail_nonfatal("sqrtf(%0.03f) != " 190 "powf(%0.03f, 1/2)\n", x[i], x[i]); 191 } 192 #endif 193 } 194 195 ATF_TC(sqrtf_inf_neg); 196 ATF_TC_HEAD(sqrtf_inf_neg, tc) 197 { 198 atf_tc_set_md_var(tc, "descr", "Test sqrtf(-Inf) == NaN"); 199 } 200 201 ATF_TC_BODY(sqrtf_inf_neg, tc) 202 { 203 #ifndef __vax__ 204 const float x = -1.0L / 0.0L; 205 float y = sqrtf(x); 206 207 ATF_CHECK(isnan(y) != 0); 208 #endif 209 } 210 211 ATF_TC(sqrtf_inf_pos); 212 ATF_TC_HEAD(sqrtf_inf_pos, tc) 213 { 214 atf_tc_set_md_var(tc, "descr", "Test sqrtf(+Inf) == +Inf"); 215 } 216 217 ATF_TC_BODY(sqrtf_inf_pos, tc) 218 { 219 #ifndef __vax__ 220 const float x = 1.0L / 0.0L; 221 float y = sqrtf(x); 222 223 ATF_CHECK(isinf(y) != 0); 224 ATF_CHECK(signbit(y) == 0); 225 #endif 226 } 227 228 ATF_TC(sqrtf_zero_neg); 229 ATF_TC_HEAD(sqrtf_zero_neg, tc) 230 { 231 atf_tc_set_md_var(tc, "descr", "Test sqrtf(-0.0) == -0.0"); 232 } 233 234 ATF_TC_BODY(sqrtf_zero_neg, tc) 235 { 236 #ifndef __vax__ 237 const float x = -0.0L; 238 float y = sqrtf(x); 239 240 if (fabsf(y) > 0.0 || signbit(y) == 0) 241 atf_tc_fail_nonfatal("sqrtf(-0.0) != -0.0"); 242 #endif 243 } 244 245 ATF_TC(sqrtf_zero_pos); 246 ATF_TC_HEAD(sqrtf_zero_pos, tc) 247 { 248 atf_tc_set_md_var(tc, "descr", "Test sqrtf(+0.0) == +0.0"); 249 } 250 251 ATF_TC_BODY(sqrtf_zero_pos, tc) 252 { 253 #ifndef __vax__ 254 const float x = 0.0L; 255 float y = sqrtf(x); 256 257 if (fabsf(y) > 0.0 || signbit(y) != 0) 258 atf_tc_fail_nonfatal("sqrtf(+0.0) != +0.0"); 259 #endif 260 } 261 262 /* 263 * sqrtl(3) 264 */ 265 ATF_TC(sqrtl_nan); 266 ATF_TC_HEAD(sqrtl_nan, tc) 267 { 268 atf_tc_set_md_var(tc, "descr", "Test sqrtl(NaN) == NaN"); 269 } 270 271 ATF_TC_BODY(sqrtl_nan, tc) 272 { 273 #ifndef __vax__ 274 const long double x = 0.0L / 0.0L; 275 276 ATF_CHECK(isnan(x) != 0); 277 ATF_CHECK(isnan(sqrtl(x)) != 0); 278 #endif 279 } 280 281 ATF_TC(sqrtl_powl); 282 ATF_TC_HEAD(sqrtl_powl, tc) 283 { 284 atf_tc_set_md_var(tc, "descr", "Test sqrtl(3) vs. powl(3)"); 285 } 286 287 ATF_TC_BODY(sqrtl_powl, tc) 288 { 289 #ifndef __vax__ 290 const long double x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.9999 }; 291 const long double eps = 1.0e-30; 292 volatile long double y, z; 293 size_t i; 294 295 for (i = 0; i < __arraycount(x); i++) { 296 297 y = sqrtl(x[i]); 298 z = powl(x[i], 1.0 / 2.0); 299 300 if (fabsl(y - z) > eps) 301 atf_tc_fail_nonfatal("sqrtl(%0.03Lf) != " 302 "powl(%0.03Lf, 1/2)\n", x[i], x[i]); 303 } 304 #endif 305 } 306 307 ATF_TC(sqrtl_inf_neg); 308 ATF_TC_HEAD(sqrtl_inf_neg, tc) 309 { 310 atf_tc_set_md_var(tc, "descr", "Test sqrtl(-Inf) == NaN"); 311 } 312 313 ATF_TC_BODY(sqrtl_inf_neg, tc) 314 { 315 #ifndef __vax__ 316 const long double x = -1.0L / 0.0L; 317 long double y = sqrtl(x); 318 319 ATF_CHECK(isnan(y) != 0); 320 #endif 321 } 322 323 ATF_TC(sqrtl_inf_pos); 324 ATF_TC_HEAD(sqrtl_inf_pos, tc) 325 { 326 atf_tc_set_md_var(tc, "descr", "Test sqrtl(+Inf) == +Inf"); 327 } 328 329 ATF_TC_BODY(sqrtl_inf_pos, tc) 330 { 331 #ifndef __vax__ 332 const long double x = 1.0L / 0.0L; 333 long double y = sqrtl(x); 334 335 ATF_CHECK(isinf(y) != 0); 336 ATF_CHECK(signbit(y) == 0); 337 #endif 338 } 339 340 ATF_TC(sqrtl_zero_neg); 341 ATF_TC_HEAD(sqrtl_zero_neg, tc) 342 { 343 atf_tc_set_md_var(tc, "descr", "Test sqrtl(-0.0) == -0.0"); 344 } 345 346 ATF_TC_BODY(sqrtl_zero_neg, tc) 347 { 348 #ifndef __vax__ 349 const long double x = -0.0L; 350 long double y = sqrtl(x); 351 352 if (fabsl(y) > 0.0 || signbit(y) == 0) 353 atf_tc_fail_nonfatal("sqrtl(-0.0) != -0.0"); 354 #endif 355 } 356 357 ATF_TC(sqrtl_zero_pos); 358 ATF_TC_HEAD(sqrtl_zero_pos, tc) 359 { 360 atf_tc_set_md_var(tc, "descr", "Test sqrtl(+0.0) == +0.0"); 361 } 362 363 ATF_TC_BODY(sqrtl_zero_pos, tc) 364 { 365 #ifndef __vax__ 366 const long double x = 0.0L; 367 long double y = sqrtl(x); 368 369 if (fabsl(y) > 0.0 || signbit(y) != 0) 370 atf_tc_fail_nonfatal("sqrtl(+0.0) != +0.0"); 371 #endif 372 } 373 374 ATF_TP_ADD_TCS(tp) 375 { 376 377 ATF_TP_ADD_TC(tp, sqrt_nan); 378 ATF_TP_ADD_TC(tp, sqrt_pow); 379 ATF_TP_ADD_TC(tp, sqrt_inf_neg); 380 ATF_TP_ADD_TC(tp, sqrt_inf_pos); 381 ATF_TP_ADD_TC(tp, sqrt_zero_neg); 382 ATF_TP_ADD_TC(tp, sqrt_zero_pos); 383 384 ATF_TP_ADD_TC(tp, sqrtf_nan); 385 ATF_TP_ADD_TC(tp, sqrtf_powf); 386 ATF_TP_ADD_TC(tp, sqrtf_inf_neg); 387 ATF_TP_ADD_TC(tp, sqrtf_inf_pos); 388 ATF_TP_ADD_TC(tp, sqrtf_zero_neg); 389 ATF_TP_ADD_TC(tp, sqrtf_zero_pos); 390 391 ATF_TP_ADD_TC(tp, sqrtl_nan); 392 ATF_TP_ADD_TC(tp, sqrtl_powl); 393 ATF_TP_ADD_TC(tp, sqrtl_inf_neg); 394 ATF_TP_ADD_TC(tp, sqrtl_inf_pos); 395 ATF_TP_ADD_TC(tp, sqrtl_zero_neg); 396 ATF_TP_ADD_TC(tp, sqrtl_zero_pos); 397 398 return atf_no_error(); 399 } 400
Indexes created Thu Oct 02 01:09:59 GMT 2025