libstdc++-v3/testsuite/experimental/simd/tests/logarithm.cc

   1 // Copyright (C) 2020-2022 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8 //
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // only: float|double|ldouble * * *
  19 // expensive: * [1-9] * *
  20 #include "bits/verify.h"
  21 #include "bits/metahelpers.h"
  22 #include "bits/mathreference.h"
  23 #include "bits/test_values.h"
  24
  25 template <typename V>
  26   void
  27   test()
  28   {
  29     vir::test::setFuzzyness<float>(1);
  30     vir::test::setFuzzyness<double>(1);
  31
  32     using T = typename V::value_type;
  33     constexpr T nan = std::__quiet_NaN_v<T>;
  34     constexpr T inf = std::__infinity_v<T>;
  35     constexpr T denorm_min = std::__denorm_min_v<T>;
  36     constexpr T norm_min = std::__norm_min_v<T>;
  37     constexpr T min = std::__finite_min_v<T>;
  38     constexpr T max = std::__finite_max_v<T>;
  39     test_values<V>({1,
  40                     2,
  41                     4,
  42                     8,
  43                     16,
  44                     32,
  45                     64,
  46                     128,
  47                     256,
  48                     512,
  49                     1024,
  50                     2048,
  51                     3,
  52                     5,
  53                     7,
  54                     15,
  55                     17,
  56                     31,
  57                     33,
  58                     63,
  59                     65,
  60 #ifdef __STDC_IEC_559__
  61                     nan,
  62                     inf,
  63                     -inf,
  64                     denorm_min,
  65                     -denorm_min,
  66                     norm_min / 3,
  67                     -norm_min / 3,
  68                     -T(),
  69                     -norm_min,
  70                     min,
  71                     T(),
  72 #endif
  73                     norm_min,
  74                     max},
  75                    {10000,
  76 #ifdef __STDC_IEC_559__
  77                     min / 2,
  78 #else
  79                     norm_min,
  80 #endif
  81                     max / 2},
  82                    MAKE_TESTER(log), MAKE_TESTER(log10), MAKE_TESTER(log1p),
  83                    MAKE_TESTER(log2), MAKE_TESTER(logb));
  84   }