tests/lib/libm/t_log.c

   1 /* $NetBSD: t_log.c,v 1.13 2015/02/09 19:39:48 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_log.c,v 1.13 2015/02/09 19:39:48 martin Exp $");
  33
  34 #include <atf-c.h>
  35
  36 #include <math.h>
  37 #include <stdio.h>
  38 #include <string.h>
  39
  40 /*
  41  * log10(3)
  42  */
  43 ATF_TC(log10_base);
  44 ATF_TC_HEAD(log10_base, tc)
  45 {
  46         atf_tc_set_md_var(tc, "descr", "Test log10(10) == 1");
  47 }
  48
  49 ATF_TC_BODY(log10_base, tc)
  50 {
  51         ATF_CHECK(log10(10.0) == 1.0);
  52 }
  53
  54 ATF_TC(log10_nan);
  55 ATF_TC_HEAD(log10_nan, tc)
  56 {
  57         atf_tc_set_md_var(tc, "descr", "Test log10(NaN) == NaN");
  58 }
  59
  60 ATF_TC_BODY(log10_nan, tc)
  61 {
  62         const double x = 0.0L / 0.0L;
  63
  64         ATF_CHECK(isnan(x) != 0);
  65         ATF_CHECK(isnan(log10(x)) != 0);
  66 }
  67
  68 ATF_TC(log10_inf_neg);
  69 ATF_TC_HEAD(log10_inf_neg, tc)
  70 {
  71         atf_tc_set_md_var(tc, "descr", "Test log10(-Inf) == NaN");
  72 }
  73
  74 ATF_TC_BODY(log10_inf_neg, tc)
  75 {
  76         const double x = -1.0L / 0.0L;
  77         const double y = log10(x);
  78
  79         ATF_CHECK(isnan(y) != 0);
  80 }
  81
  82 ATF_TC(log10_inf_pos);
  83 ATF_TC_HEAD(log10_inf_pos, tc)
  84 {
  85         atf_tc_set_md_var(tc, "descr", "Test log10(+Inf) == +Inf");
  86 }
  87
  88 ATF_TC_BODY(log10_inf_pos, tc)
  89 {
  90         const double x = 1.0L / 0.0L;
  91
  92         ATF_CHECK(log10(x) == x);
  93 }
  94
  95 ATF_TC(log10_one_pos);
  96 ATF_TC_HEAD(log10_one_pos, tc)
  97 {
  98         atf_tc_set_md_var(tc, "descr", "Test log10(1.0) == +0.0");
  99 }
 100
 101 ATF_TC_BODY(log10_one_pos, tc)
 102 {
 103         const double x = log10(1.0);
 104         const double y = 0.0L;
 105
 106         ATF_CHECK(x == y);
 107         ATF_CHECK(signbit(x) == 0);
 108         ATF_CHECK(signbit(y) == 0);
 109 }
 110
 111 ATF_TC(log10_zero_neg);
 112 ATF_TC_HEAD(log10_zero_neg, tc)
 113 {
 114         atf_tc_set_md_var(tc, "descr", "Test log10(-0.0) == -HUGE_VAL");
 115 }
 116
 117 ATF_TC_BODY(log10_zero_neg, tc)
 118 {
 119         const double x = -0.0L;
 120
 121         ATF_CHECK(log10(x) == -HUGE_VAL);
 122 }
 123
 124 ATF_TC(log10_zero_pos);
 125 ATF_TC_HEAD(log10_zero_pos, tc)
 126 {
 127         atf_tc_set_md_var(tc, "descr", "Test log10(+0.0) == -HUGE_VAL");
 128 }
 129
 130 ATF_TC_BODY(log10_zero_pos, tc)
 131 {
 132         const double x = 0.0L;
 133
 134         ATF_CHECK(log10(x) == -HUGE_VAL);
 135 }
 136
 137 /*
 138  * log10f(3)
 139  */
 140 ATF_TC(log10f_base);
 141 ATF_TC_HEAD(log10f_base, tc)
 142 {
 143         atf_tc_set_md_var(tc, "descr", "Test log10f(10) == 1");
 144 }
 145
 146 ATF_TC_BODY(log10f_base, tc)
 147 {
 148         ATF_CHECK(log10f(10.0) == 1.0);
 149 }
 150
 151 ATF_TC(log10f_nan);
 152 ATF_TC_HEAD(log10f_nan, tc)
 153 {
 154         atf_tc_set_md_var(tc, "descr", "Test log10f(NaN) == NaN");
 155 }
 156
 157 ATF_TC_BODY(log10f_nan, tc)
 158 {
 159         const float x = 0.0L / 0.0L;
 160
 161         ATF_CHECK(isnan(x) != 0);
 162         ATF_CHECK(isnan(log10f(x)) != 0);
 163 }
 164
 165 ATF_TC(log10f_inf_neg);
 166 ATF_TC_HEAD(log10f_inf_neg, tc)
 167 {
 168         atf_tc_set_md_var(tc, "descr", "Test log10f(-Inf) == NaN");
 169 }
 170
 171 ATF_TC_BODY(log10f_inf_neg, tc)
 172 {
 173         const float x = -1.0L / 0.0L;
 174         const float y = log10f(x);
 175
 176         ATF_CHECK(isnan(y) != 0);
 177 }
 178
 179 ATF_TC(log10f_inf_pos);
 180 ATF_TC_HEAD(log10f_inf_pos, tc)
 181 {
 182         atf_tc_set_md_var(tc, "descr", "Test log10f(+Inf) == +Inf");
 183 }
 184
 185 ATF_TC_BODY(log10f_inf_pos, tc)
 186 {
 187         const float x = 1.0L / 0.0L;
 188
 189         ATF_CHECK(log10f(x) == x);
 190 }
 191
 192 ATF_TC(log10f_one_pos);
 193 ATF_TC_HEAD(log10f_one_pos, tc)
 194 {
 195         atf_tc_set_md_var(tc, "descr", "Test log10f(1.0) == +0.0");
 196 }
 197
 198 ATF_TC_BODY(log10f_one_pos, tc)
 199 {
 200         const float x = log10f(1.0);
 201         const float y = 0.0L;
 202
 203         ATF_CHECK(x == y);
 204         ATF_CHECK(signbit(x) == 0);
 205         ATF_CHECK(signbit(y) == 0);
 206 }
 207
 208 ATF_TC(log10f_zero_neg);
 209 ATF_TC_HEAD(log10f_zero_neg, tc)
 210 {
 211         atf_tc_set_md_var(tc, "descr", "Test log10f(-0.0) == -HUGE_VALF");
 212 }
 213
 214 ATF_TC_BODY(log10f_zero_neg, tc)
 215 {
 216         const float x = -0.0L;
 217
 218         ATF_CHECK(log10f(x) == -HUGE_VALF);
 219 }
 220
 221 ATF_TC(log10f_zero_pos);
 222 ATF_TC_HEAD(log10f_zero_pos, tc)
 223 {
 224         atf_tc_set_md_var(tc, "descr", "Test log10f(+0.0) == -HUGE_VALF");
 225 }
 226
 227 ATF_TC_BODY(log10f_zero_pos, tc)
 228 {
 229         const float x = 0.0L;
 230
 231         ATF_CHECK(log10f(x) == -HUGE_VALF);
 232 }
 233
 234 /*
 235  * log1p(3)
 236  */
 237 ATF_TC(log1p_nan);
 238 ATF_TC_HEAD(log1p_nan, tc)
 239 {
 240         atf_tc_set_md_var(tc, "descr", "Test log1p(NaN) == NaN");
 241 }
 242
 243 ATF_TC_BODY(log1p_nan, tc)
 244 {
 245         const double x = 0.0L / 0.0L;
 246
 247         ATF_CHECK(isnan(x) != 0);
 248         ATF_CHECK(isnan(log1p(x)) != 0);
 249 }
 250
 251 ATF_TC(log1p_inf_neg);
 252 ATF_TC_HEAD(log1p_inf_neg, tc)
 253 {
 254         atf_tc_set_md_var(tc, "descr", "Test log1p(-Inf) == NaN");
 255 }
 256
 257 ATF_TC_BODY(log1p_inf_neg, tc)
 258 {
 259         const double x = -1.0L / 0.0L;
 260         const double y = log1p(x);
 261
 262         if (isnan(y) == 0) {
 263                 atf_tc_expect_fail("PR lib/45362");
 264                 atf_tc_fail("log1p(-Inf) != NaN");
 265         }
 266 }
 267
 268 ATF_TC(log1p_inf_pos);
 269 ATF_TC_HEAD(log1p_inf_pos, tc)
 270 {
 271         atf_tc_set_md_var(tc, "descr", "Test log1p(+Inf) == +Inf");
 272 }
 273
 274 ATF_TC_BODY(log1p_inf_pos, tc)
 275 {
 276         const double x = 1.0L / 0.0L;
 277
 278         ATF_CHECK(log1p(x) == x);
 279 }
 280
 281 ATF_TC(log1p_one_neg);
 282 ATF_TC_HEAD(log1p_one_neg, tc)
 283 {
 284         atf_tc_set_md_var(tc, "descr", "Test log1p(-1.0) == -HUGE_VAL");
 285 }
 286
 287 ATF_TC_BODY(log1p_one_neg, tc)
 288 {
 289         const double x = log1p(-1.0);
 290
 291         if (x != -HUGE_VAL) {
 292                 atf_tc_expect_fail("PR lib/45362");
 293                 atf_tc_fail("log1p(-1.0) != -HUGE_VAL");
 294         }
 295 }
 296
 297 ATF_TC(log1p_zero_neg);
 298 ATF_TC_HEAD(log1p_zero_neg, tc)
 299 {
 300         atf_tc_set_md_var(tc, "descr", "Test log1p(-0.0) == -0.0");
 301 }
 302
 303 ATF_TC_BODY(log1p_zero_neg, tc)
 304 {
 305         const double x = -0.0L;
 306
 307         ATF_CHECK(log1p(x) == x);
 308 }
 309
 310 ATF_TC(log1p_zero_pos);
 311 ATF_TC_HEAD(log1p_zero_pos, tc)
 312 {
 313         atf_tc_set_md_var(tc, "descr", "Test log1p(+0.0) == +0.0");
 314 }
 315
 316 ATF_TC_BODY(log1p_zero_pos, tc)
 317 {
 318         const double x = 0.0L;
 319
 320         ATF_CHECK(log1p(x) == x);
 321 }
 322
 323 /*
 324  * log1pf(3)
 325  */
 326 ATF_TC(log1pf_nan);
 327 ATF_TC_HEAD(log1pf_nan, tc)
 328 {
 329         atf_tc_set_md_var(tc, "descr", "Test log1pf(NaN) == NaN");
 330 }
 331
 332 ATF_TC_BODY(log1pf_nan, tc)
 333 {
 334         const float x = 0.0L / 0.0L;
 335
 336         ATF_CHECK(isnan(x) != 0);
 337         ATF_CHECK(isnan(log1pf(x)) != 0);
 338 }
 339
 340 ATF_TC(log1pf_inf_neg);
 341 ATF_TC_HEAD(log1pf_inf_neg, tc)
 342 {
 343         atf_tc_set_md_var(tc, "descr", "Test log1pf(-Inf) == NaN");
 344 }
 345
 346 ATF_TC_BODY(log1pf_inf_neg, tc)
 347 {
 348         const float x = -1.0L / 0.0L;
 349         const float y = log1pf(x);
 350
 351         if (isnan(y) == 0) {
 352                 atf_tc_expect_fail("PR lib/45362");
 353                 atf_tc_fail("log1pf(-Inf) != NaN");
 354         }
 355 }
 356
 357 ATF_TC(log1pf_inf_pos);
 358 ATF_TC_HEAD(log1pf_inf_pos, tc)
 359 {
 360         atf_tc_set_md_var(tc, "descr", "Test log1pf(+Inf) == +Inf");
 361 }
 362
 363 ATF_TC_BODY(log1pf_inf_pos, tc)
 364 {
 365         const float x = 1.0L / 0.0L;
 366
 367         ATF_CHECK(log1pf(x) == x);
 368 }
 369
 370 ATF_TC(log1pf_one_neg);
 371 ATF_TC_HEAD(log1pf_one_neg, tc)
 372 {
 373         atf_tc_set_md_var(tc, "descr", "Test log1pf(-1.0) == -HUGE_VALF");
 374 }
 375
 376 ATF_TC_BODY(log1pf_one_neg, tc)
 377 {
 378         const float x = log1pf(-1.0);
 379
 380         if (x != -HUGE_VALF) {
 381                 atf_tc_expect_fail("PR lib/45362");
 382                 atf_tc_fail("log1pf(-1.0) != -HUGE_VALF");
 383         }
 384 }
 385
 386 ATF_TC(log1pf_zero_neg);
 387 ATF_TC_HEAD(log1pf_zero_neg, tc)
 388 {
 389         atf_tc_set_md_var(tc, "descr", "Test log1pf(-0.0) == -0.0");
 390 }
 391
 392 ATF_TC_BODY(log1pf_zero_neg, tc)
 393 {
 394         const float x = -0.0L;
 395
 396         ATF_CHECK(log1pf(x) == x);
 397 }
 398
 399 ATF_TC(log1pf_zero_pos);
 400 ATF_TC_HEAD(log1pf_zero_pos, tc)
 401 {
 402         atf_tc_set_md_var(tc, "descr", "Test log1pf(+0.0) == +0.0");
 403 }
 404
 405 ATF_TC_BODY(log1pf_zero_pos, tc)
 406 {
 407         const float x = 0.0L;
 408
 409         ATF_CHECK(log1pf(x) == x);
 410 }
 411
 412 /*
 413  * log2(3)
 414  */
 415 ATF_TC(log2_base);
 416 ATF_TC_HEAD(log2_base, tc)
 417 {
 418         atf_tc_set_md_var(tc, "descr", "Test log2(2) == 1");
 419 }
 420
 421 ATF_TC_BODY(log2_base, tc)
 422 {
 423         ATF_CHECK(log2(2.0) == 1.0);
 424 }
 425
 426 ATF_TC(log2_nan);
 427 ATF_TC_HEAD(log2_nan, tc)
 428 {
 429         atf_tc_set_md_var(tc, "descr", "Test log2(NaN) == NaN");
 430 }
 431
 432 ATF_TC_BODY(log2_nan, tc)
 433 {
 434         const double x = 0.0L / 0.0L;
 435
 436         ATF_CHECK(isnan(x) != 0);
 437         ATF_CHECK(isnan(log2(x)) != 0);
 438 }
 439
 440 ATF_TC(log2_inf_neg);
 441 ATF_TC_HEAD(log2_inf_neg, tc)
 442 {
 443         atf_tc_set_md_var(tc, "descr", "Test log2(-Inf) == NaN");
 444 }
 445
 446 ATF_TC_BODY(log2_inf_neg, tc)
 447 {
 448         const double x = -1.0L / 0.0L;
 449         const double y = log2(x);
 450
 451         ATF_CHECK(isnan(y) != 0);
 452 }
 453
 454 ATF_TC(log2_inf_pos);
 455 ATF_TC_HEAD(log2_inf_pos, tc)
 456 {
 457         atf_tc_set_md_var(tc, "descr", "Test log2(+Inf) == +Inf");
 458 }
 459
 460 ATF_TC_BODY(log2_inf_pos, tc)
 461 {
 462         const double x = 1.0L / 0.0L;
 463
 464         ATF_CHECK(log2(x) == x);
 465 }
 466
 467 ATF_TC(log2_one_pos);
 468 ATF_TC_HEAD(log2_one_pos, tc)
 469 {
 470         atf_tc_set_md_var(tc, "descr", "Test log2(1.0) == +0.0");
 471 }
 472
 473 ATF_TC_BODY(log2_one_pos, tc)
 474 {
 475         const double x = log2(1.0);
 476         const double y = 0.0L;
 477
 478         ATF_CHECK(x == y);
 479         ATF_CHECK(signbit(x) == 0);
 480         ATF_CHECK(signbit(y) == 0);
 481 }
 482
 483 ATF_TC(log2_zero_neg);
 484 ATF_TC_HEAD(log2_zero_neg, tc)
 485 {
 486         atf_tc_set_md_var(tc, "descr", "Test log2(-0.0) == -HUGE_VAL");
 487 }
 488
 489 ATF_TC_BODY(log2_zero_neg, tc)
 490 {
 491         const double x = -0.0L;
 492
 493         ATF_CHECK(log2(x) == -HUGE_VAL);
 494 }
 495
 496 ATF_TC(log2_zero_pos);
 497 ATF_TC_HEAD(log2_zero_pos, tc)
 498 {
 499         atf_tc_set_md_var(tc, "descr", "Test log2(+0.0) == -HUGE_VAL");
 500 }
 501
 502 ATF_TC_BODY(log2_zero_pos, tc)
 503 {
 504         const double x = 0.0L;
 505
 506         ATF_CHECK(log2(x) == -HUGE_VAL);
 507 }
 508
 509 /*
 510  * log2f(3)
 511  */
 512 ATF_TC(log2f_base);
 513 ATF_TC_HEAD(log2f_base, tc)
 514 {
 515         atf_tc_set_md_var(tc, "descr", "Test log2f(2) == 1");
 516 }
 517
 518 ATF_TC_BODY(log2f_base, tc)
 519 {
 520         ATF_CHECK(log2f(2.0) == 1.0);
 521 }
 522
 523 ATF_TC(log2f_nan);
 524 ATF_TC_HEAD(log2f_nan, tc)
 525 {
 526         atf_tc_set_md_var(tc, "descr", "Test log2f(NaN) == NaN");
 527 }
 528
 529 ATF_TC_BODY(log2f_nan, tc)
 530 {
 531         const float x = 0.0L / 0.0L;
 532
 533         ATF_CHECK(isnan(x) != 0);
 534         ATF_CHECK(isnan(log2f(x)) != 0);
 535 }
 536
 537 ATF_TC(log2f_inf_neg);
 538 ATF_TC_HEAD(log2f_inf_neg, tc)
 539 {
 540         atf_tc_set_md_var(tc, "descr", "Test log2f(-Inf) == NaN");
 541 }
 542
 543 ATF_TC_BODY(log2f_inf_neg, tc)
 544 {
 545         const float x = -1.0L / 0.0L;
 546         const float y = log2f(x);
 547
 548         ATF_CHECK(isnan(y) != 0);
 549 }
 550
 551 ATF_TC(log2f_inf_pos);
 552 ATF_TC_HEAD(log2f_inf_pos, tc)
 553 {
 554         atf_tc_set_md_var(tc, "descr", "Test log2f(+Inf) == +Inf");
 555 }
 556
 557 ATF_TC_BODY(log2f_inf_pos, tc)
 558 {
 559         const float x = 1.0L / 0.0L;
 560
 561         ATF_CHECK(log2f(x) == x);
 562 }
 563
 564 ATF_TC(log2f_one_pos);
 565 ATF_TC_HEAD(log2f_one_pos, tc)
 566 {
 567         atf_tc_set_md_var(tc, "descr", "Test log2f(1.0) == +0.0");
 568 }
 569
 570 ATF_TC_BODY(log2f_one_pos, tc)
 571 {
 572         const float x = log2f(1.0);
 573         const float y = 0.0L;
 574
 575         ATF_CHECK(x == y);
 576         ATF_CHECK(signbit(x) == 0);
 577         ATF_CHECK(signbit(y) == 0);
 578 }
 579
 580 ATF_TC(log2f_zero_neg);
 581 ATF_TC_HEAD(log2f_zero_neg, tc)
 582 {
 583         atf_tc_set_md_var(tc, "descr", "Test log2f(-0.0) == -HUGE_VALF");
 584 }
 585
 586 ATF_TC_BODY(log2f_zero_neg, tc)
 587 {
 588         const float x = -0.0L;
 589
 590         ATF_CHECK(log2f(x) == -HUGE_VALF);
 591 }
 592
 593 ATF_TC(log2f_zero_pos);
 594 ATF_TC_HEAD(log2f_zero_pos, tc)
 595 {
 596         atf_tc_set_md_var(tc, "descr", "Test log2f(+0.0) == -HUGE_VALF");
 597 }
 598
 599 ATF_TC_BODY(log2f_zero_pos, tc)
 600 {
 601         const float x = 0.0L;
 602
 603         ATF_CHECK(log2f(x) == -HUGE_VALF);
 604 }
 605
 606 /*
 607  * log(3)
 608  */
 609 ATF_TC(log_base);
 610 ATF_TC_HEAD(log_base, tc)
 611 {
 612         atf_tc_set_md_var(tc, "descr", "Test log(e) == 1");
 613 }
 614
 615 ATF_TC_BODY(log_base, tc)
 616 {
 617         const double eps = 1.0e-38;
 618
 619         if (fabs(log(M_E) - 1.0) > eps)
 620                 atf_tc_fail_nonfatal("log(e) != 1");
 621 }
 622
 623 ATF_TC(log_nan);
 624 ATF_TC_HEAD(log_nan, tc)
 625 {
 626         atf_tc_set_md_var(tc, "descr", "Test log(NaN) == NaN");
 627 }
 628
 629 ATF_TC_BODY(log_nan, tc)
 630 {
 631         const double x = 0.0L / 0.0L;
 632
 633         ATF_CHECK(isnan(x) != 0);
 634         ATF_CHECK(isnan(log(x)) != 0);
 635 }
 636
 637 ATF_TC(log_inf_neg);
 638 ATF_TC_HEAD(log_inf_neg, tc)
 639 {
 640         atf_tc_set_md_var(tc, "descr", "Test log(-Inf) == NaN");
 641 }
 642
 643 ATF_TC_BODY(log_inf_neg, tc)
 644 {
 645         const double x = -1.0L / 0.0L;
 646         const double y = log(x);
 647
 648         ATF_CHECK(isnan(y) != 0);
 649 }
 650
 651 ATF_TC(log_inf_pos);
 652 ATF_TC_HEAD(log_inf_pos, tc)
 653 {
 654         atf_tc_set_md_var(tc, "descr", "Test log(+Inf) == +Inf");
 655 }
 656
 657 ATF_TC_BODY(log_inf_pos, tc)
 658 {
 659         const double x = 1.0L / 0.0L;
 660
 661         ATF_CHECK(log(x) == x);
 662 }
 663
 664 ATF_TC(log_one_pos);
 665 ATF_TC_HEAD(log_one_pos, tc)
 666 {
 667         atf_tc_set_md_var(tc, "descr", "Test log(1.0) == +0.0");
 668 }
 669
 670 ATF_TC_BODY(log_one_pos, tc)
 671 {
 672         const double x = log(1.0);
 673         const double y = 0.0L;
 674
 675         ATF_CHECK(x == y);
 676         ATF_CHECK(signbit(x) == 0);
 677         ATF_CHECK(signbit(y) == 0);
 678 }
 679
 680 ATF_TC(log_zero_neg);
 681 ATF_TC_HEAD(log_zero_neg, tc)
 682 {
 683         atf_tc_set_md_var(tc, "descr", "Test log(-0.0) == -HUGE_VAL");
 684 }
 685
 686 ATF_TC_BODY(log_zero_neg, tc)
 687 {
 688         const double x = -0.0L;
 689
 690         ATF_CHECK(log(x) == -HUGE_VAL);
 691 }
 692
 693 ATF_TC(log_zero_pos);
 694 ATF_TC_HEAD(log_zero_pos, tc)
 695 {
 696         atf_tc_set_md_var(tc, "descr", "Test log(+0.0) == -HUGE_VAL");
 697 }
 698
 699 ATF_TC_BODY(log_zero_pos, tc)
 700 {
 701         const double x = 0.0L;
 702
 703         ATF_CHECK(log(x) == -HUGE_VAL);
 704 }
 705
 706 /*
 707  * logf(3)
 708  */
 709 ATF_TC(logf_base);
 710 ATF_TC_HEAD(logf_base, tc)
 711 {
 712         atf_tc_set_md_var(tc, "descr", "Test logf(e) == 1");
 713 }
 714
 715 ATF_TC_BODY(logf_base, tc)
 716 {
 717         const float eps = 1.0e-7;
 718
 719         if (fabsf(logf(M_E) - 1.0f) > eps)
 720                 atf_tc_fail_nonfatal("logf(e) != 1");
 721 }
 722
 723 ATF_TC(logf_nan);
 724 ATF_TC_HEAD(logf_nan, tc)
 725 {
 726         atf_tc_set_md_var(tc, "descr", "Test logf(NaN) == NaN");
 727 }
 728
 729 ATF_TC_BODY(logf_nan, tc)
 730 {
 731         const float x = 0.0L / 0.0L;
 732
 733         ATF_CHECK(isnan(x) != 0);
 734         ATF_CHECK(isnan(logf(x)) != 0);
 735 }
 736
 737 ATF_TC(logf_inf_neg);
 738 ATF_TC_HEAD(logf_inf_neg, tc)
 739 {
 740         atf_tc_set_md_var(tc, "descr", "Test logf(-Inf) == NaN");
 741 }
 742
 743 ATF_TC_BODY(logf_inf_neg, tc)
 744 {
 745         const float x = -1.0L / 0.0L;
 746         const float y = logf(x);
 747
 748         ATF_CHECK(isnan(y) != 0);
 749 }
 750
 751 ATF_TC(logf_inf_pos);
 752 ATF_TC_HEAD(logf_inf_pos, tc)
 753 {
 754         atf_tc_set_md_var(tc, "descr", "Test logf(+Inf) == +Inf");
 755 }
 756
 757 ATF_TC_BODY(logf_inf_pos, tc)
 758 {
 759         const float x = 1.0L / 0.0L;
 760
 761         ATF_CHECK(logf(x) == x);
 762 }
 763
 764 ATF_TC(logf_one_pos);
 765 ATF_TC_HEAD(logf_one_pos, tc)
 766 {
 767         atf_tc_set_md_var(tc, "descr", "Test logf(1.0) == +0.0");
 768 }
 769
 770 ATF_TC_BODY(logf_one_pos, tc)
 771 {
 772         const float x = logf(1.0);
 773         const float y = 0.0L;
 774
 775         ATF_CHECK(x == y);
 776         ATF_CHECK(signbit(x) == 0);
 777         ATF_CHECK(signbit(y) == 0);
 778 }
 779
 780 ATF_TC(logf_zero_neg);
 781 ATF_TC_HEAD(logf_zero_neg, tc)
 782 {
 783         atf_tc_set_md_var(tc, "descr", "Test logf(-0.0) == -HUGE_VALF");
 784 }
 785
 786 ATF_TC_BODY(logf_zero_neg, tc)
 787 {
 788         const float x = -0.0L;
 789
 790         ATF_CHECK(logf(x) == -HUGE_VALF);
 791 }
 792
 793 ATF_TC(logf_zero_pos);
 794 ATF_TC_HEAD(logf_zero_pos, tc)
 795 {
 796         atf_tc_set_md_var(tc, "descr", "Test logf(+0.0) == -HUGE_VALF");
 797 }
 798
 799 ATF_TC_BODY(logf_zero_pos, tc)
 800 {
 801         const float x = 0.0L;
 802
 803         ATF_CHECK(logf(x) == -HUGE_VALF);
 804 }
 805
 806 ATF_TP_ADD_TCS(tp)
 807 {
 808
 809         ATF_TP_ADD_TC(tp, log10_base);
 810         ATF_TP_ADD_TC(tp, log10_nan);
 811         ATF_TP_ADD_TC(tp, log10_inf_neg);
 812         ATF_TP_ADD_TC(tp, log10_inf_pos);
 813         ATF_TP_ADD_TC(tp, log10_one_pos);
 814         ATF_TP_ADD_TC(tp, log10_zero_neg);
 815         ATF_TP_ADD_TC(tp, log10_zero_pos);
 816
 817         ATF_TP_ADD_TC(tp, log10f_base);
 818         ATF_TP_ADD_TC(tp, log10f_nan);
 819         ATF_TP_ADD_TC(tp, log10f_inf_neg);
 820         ATF_TP_ADD_TC(tp, log10f_inf_pos);
 821         ATF_TP_ADD_TC(tp, log10f_one_pos);
 822         ATF_TP_ADD_TC(tp, log10f_zero_neg);
 823         ATF_TP_ADD_TC(tp, log10f_zero_pos);
 824
 825         ATF_TP_ADD_TC(tp, log1p_nan);
 826         ATF_TP_ADD_TC(tp, log1p_inf_neg);
 827         ATF_TP_ADD_TC(tp, log1p_inf_pos);
 828         ATF_TP_ADD_TC(tp, log1p_one_neg);
 829         ATF_TP_ADD_TC(tp, log1p_zero_neg);
 830         ATF_TP_ADD_TC(tp, log1p_zero_pos);
 831
 832         ATF_TP_ADD_TC(tp, log1pf_nan);
 833         ATF_TP_ADD_TC(tp, log1pf_inf_neg);
 834         ATF_TP_ADD_TC(tp, log1pf_inf_pos);
 835         ATF_TP_ADD_TC(tp, log1pf_one_neg);
 836         ATF_TP_ADD_TC(tp, log1pf_zero_neg);
 837         ATF_TP_ADD_TC(tp, log1pf_zero_pos);
 838
 839         ATF_TP_ADD_TC(tp, log2_base);
 840         ATF_TP_ADD_TC(tp, log2_nan);
 841         ATF_TP_ADD_TC(tp, log2_inf_neg);
 842         ATF_TP_ADD_TC(tp, log2_inf_pos);
 843         ATF_TP_ADD_TC(tp, log2_one_pos);
 844         ATF_TP_ADD_TC(tp, log2_zero_neg);
 845         ATF_TP_ADD_TC(tp, log2_zero_pos);
 846
 847         ATF_TP_ADD_TC(tp, log2f_base);
 848         ATF_TP_ADD_TC(tp, log2f_nan);
 849         ATF_TP_ADD_TC(tp, log2f_inf_neg);
 850         ATF_TP_ADD_TC(tp, log2f_inf_pos);
 851         ATF_TP_ADD_TC(tp, log2f_one_pos);
 852         ATF_TP_ADD_TC(tp, log2f_zero_neg);
 853         ATF_TP_ADD_TC(tp, log2f_zero_pos);
 854
 855         ATF_TP_ADD_TC(tp, log_base);
 856         ATF_TP_ADD_TC(tp, log_nan);
 857         ATF_TP_ADD_TC(tp, log_inf_neg);
 858         ATF_TP_ADD_TC(tp, log_inf_pos);
 859         ATF_TP_ADD_TC(tp, log_one_pos);
 860         ATF_TP_ADD_TC(tp, log_zero_neg);
 861         ATF_TP_ADD_TC(tp, log_zero_pos);
 862
 863         ATF_TP_ADD_TC(tp, logf_base);
 864         ATF_TP_ADD_TC(tp, logf_nan);
 865         ATF_TP_ADD_TC(tp, logf_inf_neg);
 866         ATF_TP_ADD_TC(tp, logf_inf_pos);
 867         ATF_TP_ADD_TC(tp, logf_one_pos);
 868         ATF_TP_ADD_TC(tp, logf_zero_neg);
 869         ATF_TP_ADD_TC(tp, logf_zero_pos);
 870
 871         return atf_no_error();
 872 }