libstdc++-v3/testsuite/20_util/ratio/operations/ops2.cc

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-cstdint "" }
   3
   4 // 2008-07-03 Chris Fairles <chris.fairles@gmail.com>
   5
   6 // Copyright (C) 2008-2024 Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 3, or (at your option)
  12 // any later version.
  13
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18
  19 // You should have received a copy of the GNU General Public License
  20 // along with this library; see the file COPYING3.  If not see
  21 // <http://www.gnu.org/licenses/>.
  22
  23 #include <ratio>
  24 #include <testsuite_hooks.h>
  25
  26 typedef std::ratio<1, INTMAX_MAX> one_over_max;
  27 typedef std::ratio<2, INTMAX_MAX> two_over_max;
  28 typedef std::ratio<INTMAX_MAX, 1> max_over_one;
  29 typedef std::ratio<INTMAX_MAX, 2> max_over_two;
  30
  31 void
  32 test01()
  33 {
  34   std::ratio_add<one_over_max, one_over_max>::type r1;
  35
  36   VERIFY( r1.num == two_over_max::num);
  37   VERIFY( r1.den == two_over_max::den);
  38
  39   std::ratio_add<
  40     std::ratio<INTMAX_MAX / 2, INTMAX_MAX / 2>,
  41     std::ratio<INTMAX_MAX / 2 , INTMAX_MAX / 2 + 1>>::type r2;
  42
  43   VERIFY( r2.num == INTMAX_MAX );
  44   VERIFY( r2.den == (INTMAX_MAX / 2) + 1 );
  45 }
  46
  47 void
  48 test02()
  49 {
  50   std::ratio_subtract<one_over_max, one_over_max>::type r1;
  51
  52   VERIFY( r1.num == 0);
  53   VERIFY( r1.den == 1);
  54
  55   std::ratio_subtract<
  56     std::ratio<INTMAX_MAX / 2, INTMAX_MAX / 2>,
  57     std::ratio<INTMAX_MAX / 2 , INTMAX_MAX / 2 + 1>>::type r2;
  58
  59   VERIFY( r2.num == 1 );
  60   VERIFY( r2.den == (INTMAX_MAX / 2) + 1 );
  61 }
  62
  63 int main()
  64 {
  65   test01();
  66   test02();
  67   return 0;
  68 }