74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
// -*- C++ -*-
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// Copyright (C) 2007-2017 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the terms
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// of the GNU General Public License as published by the Free Software
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// Foundation; either version 3, or (at your option) any later
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// version.
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file parallel/checkers.h
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* @brief Routines for checking the correctness of algorithm results.
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* This file is a GNU parallel extension to the Standard C++ Library.
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*/
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// Written by Johannes Singler.
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#ifndef _GLIBCXX_PARALLEL_CHECKERS_H
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#define _GLIBCXX_PARALLEL_CHECKERS_H 1
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#include <cstdio>
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#include <bits/stl_algobase.h>
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#include <bits/stl_function.h>
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namespace __gnu_parallel
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{
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/**
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* @brief Check whether @c [__begin, @c __end) is sorted according
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* to @c __comp.
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* @param __begin Begin iterator of sequence.
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* @param __end End iterator of sequence.
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* @param __comp Comparator.
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* @return @c true if sorted, @c false otherwise.
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*/
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template<typename _IIter, typename _Compare>
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bool
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__is_sorted(_IIter __begin, _IIter __end, _Compare __comp)
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{
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if (__begin == __end)
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return true;
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_IIter __current(__begin), __recent(__begin);
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unsigned long long __position = 1;
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for (__current++; __current != __end; __current++)
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{
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if (__comp(*__current, *__recent))
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{
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return false;
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}
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__recent = __current;
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__position++;
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}
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return true;
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}
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}
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#endif /* _GLIBCXX_PARALLEL_CHECKERS_H */
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