libstdc++-v3/testsuite/26_numerics/headers/cmath/c99_classification_macros_c++98.cc

   1 // 2001-04-06 gdr
   2
   3 // Copyright (C) 2001-2024 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // { dg-options "-std=gnu++98" }
  21 // { dg-do compile { target c++98_only } }
  22 // { dg-excess-errors "" { target uclibc } }
  23
  24 #include <cmath>
  25
  26 void fpclassify() { }
  27
  28 void isfinite() { }
  29
  30 void isinf() { }
  31
  32 void isnan() { }
  33
  34 void isnormal() { }
  35
  36 void signbit() { }
  37
  38 void isgreater() { }
  39
  40 void isgreaterequal() { }
  41
  42 void isless() { }
  43
  44 void islessequal() { }
  45
  46 void islessgreater() { }
  47
  48 void isunordered() { }
  49
  50 #if _GLIBCXX_USE_C99_MATH
  51 template <typename _Tp>
  52   void test_c99_classify()
  53   {
  54     typedef _Tp fp_type;
  55     fp_type f1 = 1.0;
  56     fp_type f2 = 3.0;
  57     int res = 0;
  58
  59     res = std::fpclassify(f1);
  60     res = std::isfinite(f2);
  61     res = std::isinf(f1);
  62     res = std::isnan(f2);
  63     res = std::isnormal(f1);
  64     res = std::signbit(f2);
  65     res = std::isgreater(f1, f2);
  66     res = std::isgreaterequal(f1, f2);
  67     res = std::isless(f1, f2);
  68     res = std::islessequal(f1,f2);
  69     res = std::islessgreater(f1, f2);
  70     res = std::isunordered(f1, f2);
  71     res = res; // Suppress unused warning.
  72   }
  73 #endif
  74
  75 int main()
  76 {
  77 #if _GLIBCXX_USE_C99_MATH
  78   test_c99_classify<float>();
  79   test_c99_classify<double>();
  80 #endif
  81   return 0;
  82 }