math/libm-test-logb.inc

   1 /* Test logb.
   2    Copyright (C) 1997-2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include "libm-test-driver.c"
  20
  21 static const struct test_f_f_data logb_test_data[] =
  22   {
  23     TEST_f_f (logb, plus_infty, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  24     TEST_f_f (logb, minus_infty, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  25
  26     /* Bug 6793: errno setting may be missing.  */
  27     TEST_f_f (logb, 0, minus_infty, NO_INEXACT_EXCEPTION|DIVIDE_BY_ZERO_EXCEPTION),
  28
  29     TEST_f_f (logb, minus_zero, minus_infty, NO_INEXACT_EXCEPTION|DIVIDE_BY_ZERO_EXCEPTION),
  30     TEST_f_f (logb, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  31     TEST_f_f (logb, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  32     TEST_f_f (logb, snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
  33     TEST_f_f (logb, -snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
  34
  35     TEST_f_f (logb, 1, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  36     TEST_f_f (logb, lit_e, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  37     TEST_f_f (logb, 1024, 10, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  38     TEST_f_f (logb, -2000, 10, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  39
  40     TEST_f_f (logb, min_subnorm_value, MIN_EXP-MANT_DIG, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  41     TEST_f_f (logb, -min_subnorm_value, MIN_EXP-MANT_DIG, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  42     TEST_f_f (logb, min_value, MIN_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  43     TEST_f_f (logb, -min_value, MIN_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  44     TEST_f_f (logb, max_value, MAX_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  45     TEST_f_f (logb, -max_value, MAX_EXP-1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  46
  47     TEST_f_f (logb, 0x0.1p-127, -131, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  48     TEST_f_f (logb, 0x0.01p-127, -135, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  49     TEST_f_f (logb, 0x0.011p-127, -135, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  50 #if !TEST_COND_binary32
  51     TEST_f_f (logb, 0x0.8p-1022, -1023, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  52     TEST_f_f (logb, 0x0.1p-1022, -1026, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  53     TEST_f_f (logb, 0x0.00111p-1022, -1034, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  54     TEST_f_f (logb, 0x0.00001p-1022, -1042, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  55     TEST_f_f (logb, 0x0.000011p-1022, -1042, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  56     TEST_f_f (logb, 0x0.0000000000001p-1022, -1074, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  57 #endif
  58 #if MIN_EXP - MANT_DIG <= -16400
  59     TEST_f_f (logb, 0x1p-16400L, -16400, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  60     TEST_f_f (logb, 0x.00000000001p-16382L, -16426, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  61 #endif
  62
  63 #if MANT_DIG >= 57
  64     TEST_f_f (logb, 0x1.ffffffffffffffp1L, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  65     TEST_f_f (logb, -0x1.ffffffffffffffp1L, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  66 #endif
  67   };
  68
  69 static void
  70 logb_test (void)
  71 {
  72   ALL_RM_TEST (logb, 1, logb_test_data, RUN_TEST_LOOP_f_f, END);
  73 }
  74
  75 static void
  76 do_test (void)
  77 {
  78   logb_test ();
  79 }
  80
  81 /*
  82  * Local Variables:
  83  * mode:c
  84  * End:
  85  */