tests/lib/libm/t_sqrt.c

   1 /* $NetBSD: t_sqrt.c,v 1.5 2013/11/22 17:19:14 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 1.5 2013/11/22 17:19:14 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 #ifndef __vax__
  51         const double x = 0.0L / 0.0L;
  52
  53         ATF_CHECK(isnan(x) != 0);
  54         ATF_CHECK(isnan(sqrt(x)) != 0);
  55 #endif
  56 }
  57
  58 ATF_TC(sqrt_pow);
  59 ATF_TC_HEAD(sqrt_pow, tc)
  60 {
  61         atf_tc_set_md_var(tc, "descr", "Test sqrt(3) vs. pow(3)");
  62 }
  63
  64 ATF_TC_BODY(sqrt_pow, tc)
  65 {
  66 #ifndef __vax__
  67         const double x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.9999 };
  68         const double eps = 1.0e-40;
  69         double y, z;
  70         size_t i;
  71
  72         for (i = 0; i < __arraycount(x); i++) {
  73
  74                 y = sqrt(x[i]);
  75                 z = pow(x[i], 1.0 / 2.0);
  76
  77                 if (fabs(y - z) > eps)
  78                         atf_tc_fail_nonfatal("sqrt(%0.03f) != "
  79                             "pow(%0.03f, 1/2)\n", x[i], x[i]);
  80         }
  81 #endif
  82 }
  83
  84 ATF_TC(sqrt_inf_neg);
  85 ATF_TC_HEAD(sqrt_inf_neg, tc)
  86 {
  87         atf_tc_set_md_var(tc, "descr", "Test sqrt(-Inf) == NaN");
  88 }
  89
  90 ATF_TC_BODY(sqrt_inf_neg, tc)
  91 {
  92 #ifndef __vax__
  93         const double x = -1.0L / 0.0L;
  94         double y = sqrt(x);
  95
  96         ATF_CHECK(isnan(y) != 0);
  97 #endif
  98 }
  99
 100 ATF_TC(sqrt_inf_pos);
 101 ATF_TC_HEAD(sqrt_inf_pos, tc)
 102 {
 103         atf_tc_set_md_var(tc, "descr", "Test sqrt(+Inf) == +Inf");
 104 }
 105
 106 ATF_TC_BODY(sqrt_inf_pos, tc)
 107 {
 108 #ifndef __vax__
 109         const double x = 1.0L / 0.0L;
 110         double y = sqrt(x);
 111
 112         ATF_CHECK(isinf(y) != 0);
 113         ATF_CHECK(signbit(y) == 0);
 114 #endif
 115 }
 116
 117 ATF_TC(sqrt_zero_neg);
 118 ATF_TC_HEAD(sqrt_zero_neg, tc)
 119 {
 120         atf_tc_set_md_var(tc, "descr", "Test sqrt(-0.0) == -0.0");
 121 }
 122
 123 ATF_TC_BODY(sqrt_zero_neg, tc)
 124 {
 125 #ifndef __vax__
 126         const double x = -0.0L;
 127         double y = sqrt(x);
 128
 129         if (fabs(y) > 0.0 || signbit(y) == 0)
 130                 atf_tc_fail_nonfatal("sqrt(-0.0) != -0.0");
 131 #endif
 132 }
 133
 134 ATF_TC(sqrt_zero_pos);
 135 ATF_TC_HEAD(sqrt_zero_pos, tc)
 136 {
 137         atf_tc_set_md_var(tc, "descr", "Test sqrt(+0.0) == +0.0");
 138 }
 139
 140 ATF_TC_BODY(sqrt_zero_pos, tc)
 141 {
 142 #ifndef __vax__
 143         const double x = 0.0L;
 144         double y = sqrt(x);
 145
 146         if (fabs(y) > 0.0 || signbit(y) != 0)
 147                 atf_tc_fail_nonfatal("sqrt(+0.0) != +0.0");
 148 #endif
 149 }
 150
 151 /*
 152  * sqrtf(3)
 153  */
 154 ATF_TC(sqrtf_nan);
 155 ATF_TC_HEAD(sqrtf_nan, tc)
 156 {
 157         atf_tc_set_md_var(tc, "descr", "Test sqrtf(NaN) == NaN");
 158 }
 159
 160 ATF_TC_BODY(sqrtf_nan, tc)
 161 {
 162 #ifndef __vax__
 163         const float x = 0.0L / 0.0L;
 164
 165         ATF_CHECK(isnan(x) != 0);
 166         ATF_CHECK(isnan(sqrtf(x)) != 0);
 167 #endif
 168 }
 169
 170 ATF_TC(sqrtf_powf);
 171 ATF_TC_HEAD(sqrtf_powf, tc)
 172 {
 173         atf_tc_set_md_var(tc, "descr", "Test sqrtf(3) vs. powf(3)");
 174 }
 175
 176 ATF_TC_BODY(sqrtf_powf, tc)
 177 {
 178 #ifndef __vax__
 179         const float x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.9999 };
 180         const float eps = 1.0e-30;
 181         volatile float y, z;
 182         size_t i;
 183
 184         for (i = 0; i < __arraycount(x); i++) {
 185
 186                 y = sqrtf(x[i]);
 187                 z = powf(x[i], 1.0 / 2.0);
 188
 189                 if (fabsf(y - z) > eps)
 190                         atf_tc_fail_nonfatal("sqrtf(%0.03f) != "
 191                             "powf(%0.03f, 1/2)\n", x[i], x[i]);
 192         }
 193 #endif
 194 }
 195
 196 ATF_TC(sqrtf_inf_neg);
 197 ATF_TC_HEAD(sqrtf_inf_neg, tc)
 198 {
 199         atf_tc_set_md_var(tc, "descr", "Test sqrtf(-Inf) == NaN");
 200 }
 201
 202 ATF_TC_BODY(sqrtf_inf_neg, tc)
 203 {
 204 #ifndef __vax__
 205         const float x = -1.0L / 0.0L;
 206         float y = sqrtf(x);
 207
 208         ATF_CHECK(isnan(y) != 0);
 209 #endif
 210 }
 211
 212 ATF_TC(sqrtf_inf_pos);
 213 ATF_TC_HEAD(sqrtf_inf_pos, tc)
 214 {
 215         atf_tc_set_md_var(tc, "descr", "Test sqrtf(+Inf) == +Inf");
 216 }
 217
 218 ATF_TC_BODY(sqrtf_inf_pos, tc)
 219 {
 220 #ifndef __vax__
 221         const float x = 1.0L / 0.0L;
 222         float y = sqrtf(x);
 223
 224         ATF_CHECK(isinf(y) != 0);
 225         ATF_CHECK(signbit(y) == 0);
 226 #endif
 227 }
 228
 229 ATF_TC(sqrtf_zero_neg);
 230 ATF_TC_HEAD(sqrtf_zero_neg, tc)
 231 {
 232         atf_tc_set_md_var(tc, "descr", "Test sqrtf(-0.0) == -0.0");
 233 }
 234
 235 ATF_TC_BODY(sqrtf_zero_neg, tc)
 236 {
 237 #ifndef __vax__
 238         const float x = -0.0L;
 239         float y = sqrtf(x);
 240
 241         if (fabsf(y) > 0.0 || signbit(y) == 0)
 242                 atf_tc_fail_nonfatal("sqrtf(-0.0) != -0.0");
 243 #endif
 244 }
 245
 246 ATF_TC(sqrtf_zero_pos);
 247 ATF_TC_HEAD(sqrtf_zero_pos, tc)
 248 {
 249         atf_tc_set_md_var(tc, "descr", "Test sqrtf(+0.0) == +0.0");
 250 }
 251
 252 ATF_TC_BODY(sqrtf_zero_pos, tc)
 253 {
 254 #ifndef __vax__
 255         const float x = 0.0L;
 256         float y = sqrtf(x);
 257
 258         if (fabsf(y) > 0.0 || signbit(y) != 0)
 259                 atf_tc_fail_nonfatal("sqrtf(+0.0) != +0.0");
 260 #endif
 261 }
 262
 263 /*
 264  * sqrtl(3)
 265  */
 266 ATF_TC(sqrtl_nan);
 267 ATF_TC_HEAD(sqrtl_nan, tc)
 268 {
 269         atf_tc_set_md_var(tc, "descr", "Test sqrtl(NaN) == NaN");
 270 }
 271
 272 ATF_TC_BODY(sqrtl_nan, tc)
 273 {
 274 #ifndef __vax__
 275         const long double x = 0.0L / 0.0L;
 276
 277         ATF_CHECK(isnan(x) != 0);
 278         ATF_CHECK(isnan(sqrtl(x)) != 0);
 279 #endif
 280 }
 281
 282 ATF_TC(sqrtl_powl);
 283 ATF_TC_HEAD(sqrtl_powl, tc)
 284 {
 285         atf_tc_set_md_var(tc, "descr", "Test sqrtl(3) vs. powl(3)");
 286 }
 287
 288 ATF_TC_BODY(sqrtl_powl, tc)
 289 {
 290 #ifndef __vax__
 291         const long double x[] = { 0.0, 0.005, 1.0, 99.0, 123.123, 9999.9999 };
 292         const long double eps = 5.0*DBL_EPSILON; /* XXX powl == pow for now */
 293         volatile long double y, z;
 294         size_t i;
 295
 296         for (i = 0; i < __arraycount(x); i++) {
 297
 298                 y = sqrtl(x[i]);
 299                 z = powl(x[i], 1.0 / 2.0);
 300
 301                 if (fabsl(y - z) > eps)
 302                         atf_tc_fail_nonfatal("sqrtl(%0.03Lf) != "
 303                             "powl(%0.03Lf, 1/2)\n", x[i], x[i]);
 304         }
 305 #endif
 306 }
 307
 308 ATF_TC(sqrtl_inf_neg);
 309 ATF_TC_HEAD(sqrtl_inf_neg, tc)
 310 {
 311         atf_tc_set_md_var(tc, "descr", "Test sqrtl(-Inf) == NaN");
 312 }
 313
 314 ATF_TC_BODY(sqrtl_inf_neg, tc)
 315 {
 316 #ifndef __vax__
 317         const long double x = -1.0L / 0.0L;
 318         long double y = sqrtl(x);
 319
 320         ATF_CHECK(isnan(y) != 0);
 321 #endif
 322 }
 323
 324 ATF_TC(sqrtl_inf_pos);
 325 ATF_TC_HEAD(sqrtl_inf_pos, tc)
 326 {
 327         atf_tc_set_md_var(tc, "descr", "Test sqrtl(+Inf) == +Inf");
 328 }
 329
 330 ATF_TC_BODY(sqrtl_inf_pos, tc)
 331 {
 332 #ifndef __vax__
 333         const long double x = 1.0L / 0.0L;
 334         long double y = sqrtl(x);
 335
 336         ATF_CHECK(isinf(y) != 0);
 337         ATF_CHECK(signbit(y) == 0);
 338 #endif
 339 }
 340
 341 ATF_TC(sqrtl_zero_neg);
 342 ATF_TC_HEAD(sqrtl_zero_neg, tc)
 343 {
 344         atf_tc_set_md_var(tc, "descr", "Test sqrtl(-0.0) == -0.0");
 345 }
 346
 347 ATF_TC_BODY(sqrtl_zero_neg, tc)
 348 {
 349 #ifndef __vax__
 350         const long double x = -0.0L;
 351         long double y = sqrtl(x);
 352
 353         if (fabsl(y) > 0.0 || signbit(y) == 0)
 354                 atf_tc_fail_nonfatal("sqrtl(-0.0) != -0.0");
 355 #endif
 356 }
 357
 358 ATF_TC(sqrtl_zero_pos);
 359 ATF_TC_HEAD(sqrtl_zero_pos, tc)
 360 {
 361         atf_tc_set_md_var(tc, "descr", "Test sqrtl(+0.0) == +0.0");
 362 }
 363
 364 ATF_TC_BODY(sqrtl_zero_pos, tc)
 365 {
 366 #ifndef __vax__
 367         const long double x = 0.0L;
 368         long double y = sqrtl(x);
 369
 370         if (fabsl(y) > 0.0 || signbit(y) != 0)
 371                 atf_tc_fail_nonfatal("sqrtl(+0.0) != +0.0");
 372 #endif
 373 }
 374
 375 ATF_TP_ADD_TCS(tp)
 376 {
 377
 378         ATF_TP_ADD_TC(tp, sqrt_nan);
 379         ATF_TP_ADD_TC(tp, sqrt_pow);
 380         ATF_TP_ADD_TC(tp, sqrt_inf_neg);
 381         ATF_TP_ADD_TC(tp, sqrt_inf_pos);
 382         ATF_TP_ADD_TC(tp, sqrt_zero_neg);
 383         ATF_TP_ADD_TC(tp, sqrt_zero_pos);
 384
 385         ATF_TP_ADD_TC(tp, sqrtf_nan);
 386         ATF_TP_ADD_TC(tp, sqrtf_powf);
 387         ATF_TP_ADD_TC(tp, sqrtf_inf_neg);
 388         ATF_TP_ADD_TC(tp, sqrtf_inf_pos);
 389         ATF_TP_ADD_TC(tp, sqrtf_zero_neg);
 390         ATF_TP_ADD_TC(tp, sqrtf_zero_pos);
 391
 392         ATF_TP_ADD_TC(tp, sqrtl_nan);
 393         ATF_TP_ADD_TC(tp, sqrtl_powl);
 394         ATF_TP_ADD_TC(tp, sqrtl_inf_neg);
 395         ATF_TP_ADD_TC(tp, sqrtl_inf_pos);
 396         ATF_TP_ADD_TC(tp, sqrtl_zero_neg);
 397         ATF_TP_ADD_TC(tp, sqrtl_zero_pos);
 398
 399         return atf_no_error();
 400 }