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

   1 // { dg-do run { target c++11 } }
   2
   3 // 2007-10-12  Paolo Carlini  <pcarlini@suse.de>
   4 //
   5 // Copyright (C) 2007-2018 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 // 25.3.6 Heap operations [lib.alg.heap.operations]
  23
  24 #include <algorithm>
  25 #include <functional>
  26 #include <testsuite_hooks.h>
  27
  28 int A[] = {9, 8, 6, 7, 7, 5, 5, 3, 6, 4, 1, 2, 3, 4};
  29 int B[] = {1, 3, 2, 4, 4, 6, 3, 5, 5, 7, 7, 6, 8, 9};
  30 const int N = sizeof(A) / sizeof(int);
  31
  32 void
  33 test01()
  34 {
  35   for (int i = 0; i <= N; ++i)
  36     {
  37       VERIFY( std::is_heap(A, A + i) );
  38       VERIFY( std::is_heap(A, A + i, std::less<int>()) );
  39       VERIFY( std::is_heap(B, B + i, std::greater<int>()) );
  40       VERIFY( (i < 2) || !std::is_heap(B, B + i) );
  41     }
  42 }
  43
  44 int
  45 main()
  46 {
  47   test01();
  48   return 0;
  49 }