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

   1 // 2001-04-06 gdr
   2
   3 // Copyright (C) 2001, 2005 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30 // { dg-do compile }
  31
  32 #include <cmath>
  33
  34 void fpclassify() { }
  35
  36 void isfinite() { }
  37
  38 void isinf() { }
  39
  40 void isnan() { }
  41
  42 void isnormal() { }
  43
  44 void signbit() { }
  45
  46 void isgreater() { }
  47
  48 void isgreaterequal() { }
  49
  50 void isless() { }
  51
  52 void islessequal() { }
  53
  54 void islessgreater() { }
  55
  56 void isunordered() { }
  57
  58 #if _GLIBCXX_USE_C99_MATH
  59 template <typename _Tp>
  60   void test_c99_classify()
  61   {
  62     bool test __attribute__((unused)) = true;
  63
  64     typedef _Tp fp_type;
  65     fp_type f1 = 1.0;
  66     fp_type f2 = 3.0;
  67     int res = 0;
  68
  69     res = std::fpclassify(f1);
  70     res = std::isfinite(f2);
  71     res = std::isinf(f1);
  72     res = std::isnan(f2);
  73     res = std::isnormal(f1);
  74     res = std::signbit(f2);
  75     res = std::isgreater(f1, f2);
  76     res = std::isgreaterequal(f1, f2);
  77     res = std::isless(f1, f2);
  78     res = std::islessequal(f1,f2);
  79     res = std::islessgreater(f1, f2);
  80     res = std::isunordered(f1, f2);
  81   }
  82 #endif
  83
  84 int main()
  85 {
  86 #if _GLIBCXX_USE_C99_MATH
  87   test_c99_classify<float>();
  88   test_c99_classify<double>();
  89 #endif
  90   return 0;
  91 }