libstdc++-v3/testsuite/25_algorithms/clamp/1.cc

   1 // { dg-do run { target c++17 } }
   2
   3 // Copyright (C) 2016-2025 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 x = std::clamp(1, 2, 4);
  27   const int y = std::clamp(3, 2, 4);
  28   const int z = std::clamp(5, 2, 4);
  29   VERIFY( x == 2 );
  30   VERIFY( y == 3 );
  31   VERIFY( z == 4 );
  32
  33   const int xc = std::clamp(1, 4, 2, std::greater<int>());
  34   const int yc = std::clamp(3, 4, 2, std::greater<int>());
  35   const int zc = std::clamp(5, 4, 2, std::greater<int>());
  36   VERIFY( xc == 2 );
  37   VERIFY( yc == 3 );
  38   VERIFY( zc == 4 );
  39 }
  40
  41 int
  42 main()
  43 {
  44   test01();
  45   return 0;
  46 }