tests/lib/libm/t_pow.c

   1 /* $NetBSD: t_pow.c,v 1.4 2015/09/08 05:24:27 dholland 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_pow.c,v 1.4 2015/09/08 05:24:27 dholland Exp $");
  33
  34 #include <atf-c.h>
  35 #include <math.h>
  36
  37 /*
  38  * pow(3)
  39  */
  40 ATF_TC(pow_nan_x);
  41 ATF_TC_HEAD(pow_nan_x, tc)
  42 {
  43         atf_tc_set_md_var(tc, "descr", "Test pow(NaN, y) == NaN");
  44 }
  45
  46 ATF_TC_BODY(pow_nan_x, tc)
  47 {
  48         const double x = 0.0L / 0.0L;
  49
  50         ATF_CHECK(isnan(pow(x, 2.0)) != 0);
  51 }
  52
  53 ATF_TC(pow_nan_y);
  54 ATF_TC_HEAD(pow_nan_y, tc)
  55 {
  56         atf_tc_set_md_var(tc, "descr", "Test pow(x, NaN) == NaN");
  57 }
  58
  59 ATF_TC_BODY(pow_nan_y, tc)
  60 {
  61         const double y = 0.0L / 0.0L;
  62
  63         ATF_CHECK(isnan(pow(2.0, y)) != 0);
  64 }
  65
  66 ATF_TC(pow_inf_neg_x);
  67 ATF_TC_HEAD(pow_inf_neg_x, tc)
  68 {
  69         atf_tc_set_md_var(tc, "descr", "Test pow(-Inf, y) == +-Inf || +-0.0");
  70 }
  71
  72 ATF_TC_BODY(pow_inf_neg_x, tc)
  73 {
  74         const double x = -1.0L / 0.0L;
  75         double z;
  76
  77         /*
  78          * If y is odd, y > 0, and x is -Inf, -Inf is returned.
  79          * If y is even, y > 0, and x is -Inf, +Inf is returned.
  80          */
  81         z = pow(x, 3.0);
  82
  83         if (isinf(z) == 0 || signbit(z) == 0)
  84                 atf_tc_fail_nonfatal("pow(-Inf, 3.0) != -Inf");
  85
  86         z = pow(x, 4.0);
  87
  88         if (isinf(z) == 0 || signbit(z) != 0)
  89                 atf_tc_fail_nonfatal("pow(-Inf, 4.0) != +Inf");
  90
  91         /*
  92          * If y is odd, y < 0, and x is -Inf, -0.0 is returned.
  93          * If y is even, y < 0, and x is -Inf, +0.0 is returned.
  94          */
  95         z = pow(x, -3.0);
  96
  97         if (fabs(z) > 0.0 || signbit(z) == 0)
  98                 atf_tc_fail_nonfatal("pow(-Inf, -3.0) != -0.0");
  99
 100         z = pow(x, -4.0);
 101
 102         if (fabs(z) > 0.0 || signbit(z) != 0)
 103                 atf_tc_fail_nonfatal("pow(-Inf -4.0) != +0.0");
 104 }
 105
 106 ATF_TC(pow_inf_neg_y);
 107 ATF_TC_HEAD(pow_inf_neg_y, tc)
 108 {
 109         atf_tc_set_md_var(tc, "descr", "Test pow(x, -Inf) == +Inf || +0.0");
 110 }
 111
 112 ATF_TC_BODY(pow_inf_neg_y, tc)
 113 {
 114         const double y = -1.0L / 0.0L;
 115         double z;
 116
 117         /*
 118          * If |x| < 1 and y is -Inf, +Inf is returned.
 119          * If |x| > 1 and y is -Inf, +0.0 is returned.
 120          */
 121         z = pow(0.1, y);
 122
 123         if (isinf(z) == 0 || signbit(z) != 0)
 124                 atf_tc_fail_nonfatal("pow(0.1, -Inf) != +Inf");
 125
 126         z = pow(1.1, y);
 127
 128         if (fabs(z) > 0.0 || signbit(z) != 0)
 129                 atf_tc_fail_nonfatal("pow(1.1, -Inf) != +0.0");
 130 }
 131
 132 ATF_TC(pow_inf_pos_x);
 133 ATF_TC_HEAD(pow_inf_pos_x, tc)
 134 {
 135         atf_tc_set_md_var(tc, "descr", "Test pow(+Inf, y) == +Inf || +0.0");
 136 }
 137
 138 ATF_TC_BODY(pow_inf_pos_x, tc)
 139 {
 140         const double x = 1.0L / 0.0L;
 141         double z;
 142
 143         /*
 144          * For y < 0, if x is +Inf, +0.0 is returned.
 145          * For y > 0, if x is +Inf, +Inf is returned.
 146          */
 147         z = pow(x, -2.0);
 148
 149         if (fabs(z) > 0.0 || signbit(z) != 0)
 150                 atf_tc_fail_nonfatal("pow(+Inf, -2.0) != +0.0");
 151
 152         z = pow(x, 2.0);
 153
 154         if (isinf(z) == 0 || signbit(z) != 0)
 155                 atf_tc_fail_nonfatal("pow(+Inf, 2.0) != +Inf");
 156 }
 157
 158 ATF_TC(pow_inf_pos_y);
 159 ATF_TC_HEAD(pow_inf_pos_y, tc)
 160 {
 161         atf_tc_set_md_var(tc, "descr", "Test pow(x, +Inf) == +Inf || +0.0");
 162 }
 163
 164 ATF_TC_BODY(pow_inf_pos_y, tc)
 165 {
 166         const double y = 1.0L / 0.0L;
 167         double z;
 168
 169         /*
 170          * If |x| < 1 and y is +Inf, +0.0 is returned.
 171          * If |x| > 1 and y is +Inf, +Inf is returned.
 172          */
 173         z = pow(0.1, y);
 174
 175         if (fabs(z) > 0.0 || signbit(z) != 0)
 176                 atf_tc_fail_nonfatal("pow(0.1, +Inf) != +0.0");
 177
 178         z = pow(1.1, y);
 179
 180         if (isinf(z) == 0 || signbit(z) != 0)
 181                 atf_tc_fail_nonfatal("pow(1.1, +Inf) != +Inf");
 182 }
 183
 184 ATF_TC(pow_one_neg_x);
 185 ATF_TC_HEAD(pow_one_neg_x, tc)
 186 {
 187         atf_tc_set_md_var(tc, "descr", "Test pow(-1.0, +-Inf) == 1.0");
 188 }
 189
 190 ATF_TC_BODY(pow_one_neg_x, tc)
 191 {
 192         const double infp = 1.0L / 0.0L;
 193         const double infn = -1.0L / 0.0L;
 194
 195         /*
 196          * If x is -1.0, and y is +-Inf, 1.0 shall be returned.
 197          */
 198         ATF_REQUIRE(isinf(infp) != 0);
 199         ATF_REQUIRE(isinf(infn) != 0);
 200
 201         if (pow(-1.0, infp) != 1.0) {
 202                 atf_tc_expect_fail("PR lib/45372");
 203                 atf_tc_fail_nonfatal("pow(-1.0, +Inf) != 1.0");
 204         }
 205
 206         if (pow(-1.0, infn) != 1.0) {
 207                 atf_tc_expect_fail("PR lib/45372");
 208                 atf_tc_fail_nonfatal("pow(-1.0, -Inf) != 1.0");
 209         }
 210 }
 211
 212 ATF_TC(pow_one_pos_x);
 213 ATF_TC_HEAD(pow_one_pos_x, tc)
 214 {
 215         atf_tc_set_md_var(tc, "descr", "Test pow(1.0, y) == 1.0");
 216 }
 217
 218 ATF_TC_BODY(pow_one_pos_x, tc)
 219 {
 220         const double y[] = { 0.0, 0.1, 2.0, -3.0, 99.0, 99.99, 9999999.9 };
 221         const double z = 0.0L / 0.0L;
 222         size_t i;
 223
 224         /*
 225          * For any value of y (including NaN),
 226          * if x is 1.0, 1.0 shall be returned.
 227          */
 228         if (pow(1.0, z) != 1.0)
 229                 atf_tc_fail_nonfatal("pow(1.0, NaN) != 1.0");
 230
 231         for (i = 0; i < __arraycount(y); i++) {
 232
 233                 if (pow(1.0, y[i]) != 1.0)
 234                         atf_tc_fail_nonfatal("pow(1.0, %0.01f) != 1.0", y[i]);
 235         }
 236 }
 237
 238 ATF_TC(pow_zero_x);
 239 ATF_TC_HEAD(pow_zero_x, tc)
 240 {
 241         atf_tc_set_md_var(tc, "descr", "Test pow(+-0.0, y) == +-0.0 || HUGE");
 242 }
 243
 244 ATF_TC_BODY(pow_zero_x, tc)
 245 {
 246         double z;
 247
 248         /*
 249          * If x is +0.0 or -0.0, y > 0, and y
 250          * is an odd integer, x is returned.
 251          */
 252         z = pow(+0.0, 3.0);
 253
 254         if (fabs(z) > 0.0 || signbit(z) != 0)
 255                 atf_tc_fail_nonfatal("pow(+0.0, 3.0) != +0.0");
 256
 257         z = pow(-0.0, 3.0);
 258
 259         if (fabs(z) > 0.0 || signbit(z) == 0)
 260                 atf_tc_fail_nonfatal("pow(-0.0, 3.0) != -0.0");
 261
 262         /*
 263          * If y > 0 and not an odd integer,
 264          * if x is +0.0 or -0.0, +0.0 is returned.
 265          */
 266         z = pow(+0.0, 4.0);
 267
 268         if (fabs(z) > 0.0 || signbit(z) != 0)
 269                 atf_tc_fail_nonfatal("pow(+0.0, 4.0) != +0.0");
 270
 271         z = pow(-0.0, 4.0);
 272
 273         if (fabs(z) > 0.0 || signbit(z) != 0)
 274                 atf_tc_fail_nonfatal("pow(-0.0, 4.0) != +0.0");
 275
 276         /*
 277          * If y < 0 and x is +0.0 or -0.0, either +-HUGE_VAL,
 278          * +-HUGE_VALF, or +-HUGE_VALL shall be returned.
 279          */
 280         z = pow(+0.0, -4.0);
 281
 282         if (z != HUGE_VAL) {
 283                 atf_tc_fail_nonfatal("pow(+0.0, -4.0) != HUGE_VAL");
 284         }
 285
 286         z = pow(-0.0, -4.0);
 287
 288         if (z != HUGE_VAL) {
 289                 atf_tc_fail_nonfatal("pow(-0.0, -4.0) != HUGE_VAL");
 290         }
 291
 292         z = pow(+0.0, -5.0);
 293
 294         if (z != HUGE_VAL) {
 295                 atf_tc_fail_nonfatal("pow(+0.0, -5.0) != HUGE_VAL");
 296         }
 297
 298         z = pow(-0.0, -5.0);
 299
 300         if (z != -HUGE_VAL)
 301                 atf_tc_fail_nonfatal("pow(-0.0, -5.0) != -HUGE_VAL");
 302 }
 303
 304 ATF_TC(pow_zero_y);
 305 ATF_TC_HEAD(pow_zero_y, tc)
 306 {
 307         atf_tc_set_md_var(tc, "descr", "Test pow(x, +-0.0) == 1.0");
 308 }
 309
 310 ATF_TC_BODY(pow_zero_y, tc)
 311 {
 312         const double x[] =  { 0.1, -3.0, 77.0, 99.99, 101.0000001 };
 313         const double z = 0.0L / 0.0L;
 314         size_t i;
 315
 316         /*
 317          * For any value of x (including NaN),
 318          * if y is +0.0 or -0.0, 1.0 is returned.
 319          */
 320         if (pow(z, +0.0) != 1.0)
 321                 atf_tc_fail_nonfatal("pow(NaN, +0.0) != 1.0");
 322
 323         if (pow(z, -0.0) != 1.0)
 324                 atf_tc_fail_nonfatal("pow(NaN, -0.0) != 1.0");
 325
 326         for (i = 0; i < __arraycount(x); i++) {
 327
 328                 if (pow(x[i], +0.0) != 1.0)
 329                         atf_tc_fail_nonfatal("pow(%0.01f, +0.0) != 1.0", x[i]);
 330
 331                 if (pow(x[i], -0.0) != 1.0)
 332                         atf_tc_fail_nonfatal("pow(%0.01f, -0.0) != 1.0", x[i]);
 333         }
 334 }
 335
 336 /*
 337  * powf(3)
 338  */
 339 ATF_TC(powf_nan_x);
 340 ATF_TC_HEAD(powf_nan_x, tc)
 341 {
 342         atf_tc_set_md_var(tc, "descr", "Test powf(NaN, y) == NaN");
 343 }
 344
 345 ATF_TC_BODY(powf_nan_x, tc)
 346 {
 347         const float x = 0.0L / 0.0L;
 348
 349         ATF_CHECK(isnanf(powf(x, 2.0)) != 0);
 350 }
 351
 352 ATF_TC(powf_nan_y);
 353 ATF_TC_HEAD(powf_nan_y, tc)
 354 {
 355         atf_tc_set_md_var(tc, "descr", "Test powf(x, NaN) == NaN");
 356 }
 357
 358 ATF_TC_BODY(powf_nan_y, tc)
 359 {
 360         const float y = 0.0L / 0.0L;
 361
 362         ATF_CHECK(isnanf(powf(2.0, y)) != 0);
 363 }
 364
 365 ATF_TC(powf_inf_neg_x);
 366 ATF_TC_HEAD(powf_inf_neg_x, tc)
 367 {
 368         atf_tc_set_md_var(tc, "descr", "Test powf(-Inf, y) == +-Inf || +-0.0");
 369 }
 370
 371 ATF_TC_BODY(powf_inf_neg_x, tc)
 372 {
 373         const float x = -1.0L / 0.0L;
 374         float z;
 375
 376         /*
 377          * If y is odd, y > 0, and x is -Inf, -Inf is returned.
 378          * If y is even, y > 0, and x is -Inf, +Inf is returned.
 379          */
 380         z = powf(x, 3.0);
 381
 382         if (isinff(z) == 0 || signbit(z) == 0)
 383                 atf_tc_fail_nonfatal("powf(-Inf, 3.0) != -Inf");
 384
 385         z = powf(x, 4.0);
 386
 387         if (isinff(z) == 0 || signbit(z) != 0)
 388                 atf_tc_fail_nonfatal("powf(-Inf, 4.0) != +Inf");
 389
 390         /*
 391          * If y is odd, y < 0, and x is -Inf, -0.0 is returned.
 392          * If y is even, y < 0, and x is -Inf, +0.0 is returned.
 393          */
 394         z = powf(x, -3.0);
 395
 396         if (fabsf(z) > 0.0 || signbit(z) == 0) {
 397                 atf_tc_expect_fail("PR lib/45372");
 398                 atf_tc_fail_nonfatal("powf(-Inf, -3.0) != -0.0");
 399         }
 400
 401         z = powf(x, -4.0);
 402
 403         if (fabsf(z) > 0.0 || signbit(z) != 0)
 404                 atf_tc_fail_nonfatal("powf(-Inf -4.0) != +0.0");
 405 }
 406
 407 ATF_TC(powf_inf_neg_y);
 408 ATF_TC_HEAD(powf_inf_neg_y, tc)
 409 {
 410         atf_tc_set_md_var(tc, "descr", "Test powf(x, -Inf) == +Inf || +0.0");
 411 }
 412
 413 ATF_TC_BODY(powf_inf_neg_y, tc)
 414 {
 415         const float y = -1.0L / 0.0L;
 416         float z;
 417
 418         /*
 419          * If |x| < 1 and y is -Inf, +Inf is returned.
 420          * If |x| > 1 and y is -Inf, +0.0 is returned.
 421          */
 422         z = powf(0.1, y);
 423
 424         if (isinff(z) == 0 || signbit(z) != 0)
 425                 atf_tc_fail_nonfatal("powf(0.1, -Inf) != +Inf");
 426
 427         z = powf(1.1, y);
 428
 429         if (fabsf(z) > 0.0 || signbit(z) != 0)
 430                 atf_tc_fail_nonfatal("powf(1.1, -Inf) != +0.0");
 431 }
 432
 433 ATF_TC(powf_inf_pos_x);
 434 ATF_TC_HEAD(powf_inf_pos_x, tc)
 435 {
 436         atf_tc_set_md_var(tc, "descr", "Test powf(+Inf, y) == +Inf || +0.0");
 437 }
 438
 439 ATF_TC_BODY(powf_inf_pos_x, tc)
 440 {
 441         const float x = 1.0L / 0.0L;
 442         float z;
 443
 444         /*
 445          * For y < 0, if x is +Inf, +0.0 is returned.
 446          * For y > 0, if x is +Inf, +Inf is returned.
 447          */
 448         z = powf(x, -2.0);
 449
 450         if (fabsf(z) > 0.0 || signbit(z) != 0)
 451                 atf_tc_fail_nonfatal("powf(+Inf, -2.0) != +0.0");
 452
 453         z = powf(x, 2.0);
 454
 455         if (isinff(z) == 0 || signbit(z) != 0)
 456                 atf_tc_fail_nonfatal("powf(+Inf, 2.0) != +Inf");
 457 }
 458
 459 ATF_TC(powf_inf_pos_y);
 460 ATF_TC_HEAD(powf_inf_pos_y, tc)
 461 {
 462         atf_tc_set_md_var(tc, "descr", "Test powf(x, +Inf) == +Inf || +0.0");
 463 }
 464
 465 ATF_TC_BODY(powf_inf_pos_y, tc)
 466 {
 467         const float y = 1.0L / 0.0L;
 468         float z;
 469
 470         /*
 471          * If |x| < 1 and y is +Inf, +0.0 is returned.
 472          * If |x| > 1 and y is +Inf, +Inf is returned.
 473          */
 474         z = powf(0.1, y);
 475
 476         if (fabsf(z) > 0.0 || signbit(z) != 0)
 477                 atf_tc_fail_nonfatal("powf(0.1, +Inf) != +0.0");
 478
 479         z = powf(1.1, y);
 480
 481         if (isinff(z) == 0 || signbit(z) != 0)
 482                 atf_tc_fail_nonfatal("powf(1.1, +Inf) != +Inf");
 483 }
 484
 485 ATF_TC(powf_one_neg_x);
 486 ATF_TC_HEAD(powf_one_neg_x, tc)
 487 {
 488         atf_tc_set_md_var(tc, "descr", "Test powf(-1.0, +-Inf) == 1.0");
 489 }
 490
 491 ATF_TC_BODY(powf_one_neg_x, tc)
 492 {
 493         const float infp = 1.0L / 0.0L;
 494         const float infn = -1.0L / 0.0L;
 495
 496         /*
 497          * If x is -1.0, and y is +-Inf, 1.0 shall be returned.
 498          */
 499         ATF_REQUIRE(isinff(infp) != 0);
 500         ATF_REQUIRE(isinff(infn) != 0);
 501
 502         if (powf(-1.0, infp) != 1.0) {
 503                 atf_tc_expect_fail("PR lib/45372");
 504                 atf_tc_fail_nonfatal("powf(-1.0, +Inf) != 1.0");
 505         }
 506
 507         if (powf(-1.0, infn) != 1.0) {
 508                 atf_tc_expect_fail("PR lib/45372");
 509                 atf_tc_fail_nonfatal("powf(-1.0, -Inf) != 1.0");
 510         }
 511 }
 512
 513 ATF_TC(powf_one_pos_x);
 514 ATF_TC_HEAD(powf_one_pos_x, tc)
 515 {
 516         atf_tc_set_md_var(tc, "descr", "Test powf(1.0, y) == 1.0");
 517 }
 518
 519 ATF_TC_BODY(powf_one_pos_x, tc)
 520 {
 521         const float y[] = { 0.0, 0.1, 2.0, -3.0, 99.0, 99.99, 9999999.9 };
 522         const float z = 0.0L / 0.0L;
 523         size_t i;
 524
 525         /*
 526          * For any value of y (including NaN),
 527          * if x is 1.0, 1.0 shall be returned.
 528          */
 529         if (powf(1.0, z) != 1.0)
 530                 atf_tc_fail_nonfatal("powf(1.0, NaN) != 1.0");
 531
 532         for (i = 0; i < __arraycount(y); i++) {
 533
 534                 if (powf(1.0, y[i]) != 1.0)
 535                         atf_tc_fail_nonfatal("powf(1.0, %0.01f) != 1.0", y[i]);
 536         }
 537 }
 538
 539 ATF_TC(powf_zero_x);
 540 ATF_TC_HEAD(powf_zero_x, tc)
 541 {
 542         atf_tc_set_md_var(tc, "descr", "Test powf(+-0.0, y) == +-0.0 || HUGE");
 543 }
 544
 545 ATF_TC_BODY(powf_zero_x, tc)
 546 {
 547         float z;
 548
 549         /*
 550          * If x is +0.0 or -0.0, y > 0, and y
 551          * is an odd integer, x is returned.
 552          */
 553         z = powf(+0.0, 3.0);
 554
 555         if (fabsf(z) > 0.0 || signbit(z) != 0)
 556                 atf_tc_fail_nonfatal("powf(+0.0, 3.0) != +0.0");
 557
 558         z = powf(-0.0, 3.0);
 559
 560         if (fabsf(z) > 0.0 || signbit(z) == 0)
 561                 atf_tc_fail_nonfatal("powf(-0.0, 3.0) != -0.0");
 562
 563         /*
 564          * If y > 0 and not an odd integer,
 565          * if x is +0.0 or -0.0, +0.0 is returned.
 566          */
 567         z = powf(+0.0, 4.0);
 568
 569         if (fabsf(z) > 0.0 || signbit(z) != 0)
 570                 atf_tc_fail_nonfatal("powf(+0.0, 4.0) != +0.0");
 571
 572         z = powf(-0.0, 4.0);
 573
 574         if (fabsf(z) > 0.0 || signbit(z) != 0)
 575                 atf_tc_fail_nonfatal("powf(-0.0, 4.0) != +0.0");
 576
 577         /*
 578          * If y < 0 and x is +0.0 or -0.0, either +-HUGE_VAL,
 579          * +-HUGE_VALF, or +-HUGE_VALL shall be returned.
 580          */
 581         z = powf(+0.0, -4.0);
 582
 583         if (z != HUGE_VALF) {
 584                 atf_tc_expect_fail("PR port-amd64/45391");
 585                 atf_tc_fail_nonfatal("powf(+0.0, -4.0) != HUGE_VALF");
 586         }
 587
 588         z = powf(-0.0, -4.0);
 589
 590         if (z != HUGE_VALF) {
 591                 atf_tc_expect_fail("PR port-amd64/45391");
 592                 atf_tc_fail_nonfatal("powf(-0.0, -4.0) != HUGE_VALF");
 593         }
 594
 595         z = powf(+0.0, -5.0);
 596
 597         if (z != HUGE_VALF) {
 598                 atf_tc_expect_fail("PR port-amd64/45391");
 599                 atf_tc_fail_nonfatal("powf(+0.0, -5.0) != HUGE_VALF");
 600         }
 601
 602         z = powf(-0.0, -5.0);
 603
 604         if (z != -HUGE_VALF)
 605                 atf_tc_fail_nonfatal("powf(-0.0, -5.0) != -HUGE_VALF");
 606 }
 607
 608 ATF_TC(powf_zero_y);
 609 ATF_TC_HEAD(powf_zero_y, tc)
 610 {
 611         atf_tc_set_md_var(tc, "descr", "Test powf(x, +-0.0) == 1.0");
 612 }
 613
 614 ATF_TC_BODY(powf_zero_y, tc)
 615 {
 616         const float x[] =  { 0.1, -3.0, 77.0, 99.99, 101.0000001 };
 617         const float z = 0.0L / 0.0L;
 618         size_t i;
 619
 620         /*
 621          * For any value of x (including NaN),
 622          * if y is +0.0 or -0.0, 1.0 is returned.
 623          */
 624         if (powf(z, +0.0) != 1.0)
 625                 atf_tc_fail_nonfatal("powf(NaN, +0.0) != 1.0");
 626
 627         if (powf(z, -0.0) != 1.0)
 628                 atf_tc_fail_nonfatal("powf(NaN, -0.0) != 1.0");
 629
 630         for (i = 0; i < __arraycount(x); i++) {
 631
 632                 if (powf(x[i], +0.0) != 1.0)
 633                         atf_tc_fail_nonfatal("powf(%0.01f, +0.0) != 1.0",x[i]);
 634
 635                 if (powf(x[i], -0.0) != 1.0)
 636                         atf_tc_fail_nonfatal("powf(%0.01f, -0.0) != 1.0",x[i]);
 637         }
 638 }
 639
 640 ATF_TP_ADD_TCS(tp)
 641 {
 642
 643         ATF_TP_ADD_TC(tp, pow_nan_x);
 644         ATF_TP_ADD_TC(tp, pow_nan_y);
 645         ATF_TP_ADD_TC(tp, pow_inf_neg_x);
 646         ATF_TP_ADD_TC(tp, pow_inf_neg_y);
 647         ATF_TP_ADD_TC(tp, pow_inf_pos_x);
 648         ATF_TP_ADD_TC(tp, pow_inf_pos_y);
 649         ATF_TP_ADD_TC(tp, pow_one_neg_x);
 650         ATF_TP_ADD_TC(tp, pow_one_pos_x);
 651         ATF_TP_ADD_TC(tp, pow_zero_x);
 652         ATF_TP_ADD_TC(tp, pow_zero_y);
 653
 654         ATF_TP_ADD_TC(tp, powf_nan_x);
 655         ATF_TP_ADD_TC(tp, powf_nan_y);
 656         ATF_TP_ADD_TC(tp, powf_inf_neg_x);
 657         ATF_TP_ADD_TC(tp, powf_inf_neg_y);
 658         ATF_TP_ADD_TC(tp, powf_inf_pos_x);
 659         ATF_TP_ADD_TC(tp, powf_inf_pos_y);
 660         ATF_TP_ADD_TC(tp, powf_one_neg_x);
 661         ATF_TP_ADD_TC(tp, powf_one_pos_x);
 662         ATF_TP_ADD_TC(tp, powf_zero_x);
 663         ATF_TP_ADD_TC(tp, powf_zero_y);
 664
 665         return atf_no_error();
 666 }