libstdc++-v3/testsuite/20_util/bind/nested.cc

   1 // { dg-do run { target c++11 } }
   2 // Copyright (C) 2009-2020 Free Software Foundation, Inc.
   3 //
   4 // This file is part of the GNU ISO C++ Library.  This library is free
   5 // software; you can redistribute it and/or modify it under the
   6 // terms of the GNU General Public License as published by the
   7 // Free Software Foundation; either version 3, or (at your option)
   8 // any later version.
   9 //
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License along
  16 // with this library; see the file COPYING3.  If not see
  17 // <http://www.gnu.org/licenses/>.
  18
  19 // 20.7.11 Function template bind
  20
  21 #include <functional>
  22 #include <testsuite_hooks.h>
  23
  24 // Operations on empty function<> objects
  25 void test01()
  26 {
  27   using namespace std::placeholders;
  28
  29   int five = 5;
  30   int seven = 7;
  31   VERIFY( std::bind(std::multiplies<int>(), _1,
  32                     std::bind(std::minus<int>(), 6, _2))(five, seven) == -5 );
  33   VERIFY( std::bind(std::multiplies<int>(), _1,
  34                     std::bind(std::minus<int>(), 6, _2))(seven, five) == 7 );
  35 }
  36
  37 int main()
  38 {
  39   test01();
  40   return 0;
  41 }