libstdc++-v3/testsuite/25_algorithms/max/4.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2008-2025 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 #include <algorithm>
  21 #include <functional>
  22 #include <testsuite_hooks.h>
  23
  24 void test01()
  25 {
  26   const int& z = std::max({1, 2, 3, 4, 5, 6, 7});
  27   const double& w = std::max({2.0, 1.0, 3.2, 4.5, 5.0, 6.0, 7.0});
  28   const int& y = std::max({2, 3, 1, 4, 5, 6, 7});
  29   const float& x = std::max({2.0f, 3.0f, 5.0f, 1.0f, 7.0f, 6.0f});
  30   VERIFY( z == 7 );
  31   VERIFY( w == 7.0 );
  32   VERIFY( y == 7 );
  33   VERIFY( x == 7.0f );
  34
  35   const int& zc = std::max({1, 2, 3, 4, 5, 6, 7}, std::greater<int>());
  36   const double& wc = std::max({2.0, 1.0, 3.2, 4.5, 5.0},
  37                               std::greater<double>());
  38   const int& yc = std::max({2, 7, 1, 4, 5, 6, 3}, std::greater<int>());
  39   const float& xc = std::max({2.0f, 3.0f, 5.0f, 1.0f},
  40                              std::greater<float>());
  41
  42   VERIFY( zc == 1 );
  43   VERIFY( wc == 1.0 );
  44   VERIFY( yc == 1 );
  45   VERIFY( xc == 1.0f );
  46 }
  47
  48 int main()
  49 {
  50   test01();
  51   return 0;
  52 }