checkers.h
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// -*- C++ -*-
// Copyright (C) 2007-2013 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the terms
// of the GNU General Public License as published by the Free Software
// Foundation; either version 3, or (at your option) any later
// version.
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file parallel/checkers.h
* @brief Routines for checking the correctness of algorithm results.
* This file is a GNU parallel extension to the Standard C++ Library.
*/
// Written by Johannes Singler.
#ifndef _GLIBCXX_PARALLEL_CHECKERS_H
#define _GLIBCXX_PARALLEL_CHECKERS_H 1
#include <cstdio>
#include <bits/stl_algobase.h>
#include <bits/stl_function.h>
namespace __gnu_parallel
{
/**
* @brief Check whether @c [__begin, @c __end) is sorted according
* to @c __comp.
* @param __begin Begin iterator of sequence.
* @param __end End iterator of sequence.
* @param __comp Comparator.
* @return @c true if sorted, @c false otherwise.
*/
template<typename _IIter, typename _Compare>
bool
__is_sorted(_IIter __begin, _IIter __end, _Compare __comp)
{
if (__begin == __end)
return true;
_IIter __current(__begin), __recent(__begin);
unsigned long long __position = 1;
for (__current++; __current != __end; __current++)
{
if (__comp(*__current, *__recent))
{
return false;
}
__recent = __current;
__position++;
}
return true;
}
}
#endif /* _GLIBCXX_PARALLEL_CHECKERS_H */