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Research/inc/tbb/internal/_range_iterator.h
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Research/inc/tbb/internal/_range_iterator.h
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/*
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Copyright 2005-2015 Intel Corporation. All Rights Reserved.
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This file is part of Threading Building Blocks. Threading Building Blocks is free software;
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you can redistribute it and/or modify it under the terms of the GNU General Public License
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version 2 as published by the Free Software Foundation. Threading Building Blocks is
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distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details. You should have received a copy of
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the GNU General Public License along with Threading Building Blocks; if not, write to the
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Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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As a special exception, you may use this file as part of a free software library without
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restriction. Specifically, if other files instantiate templates or use macros or inline
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functions from this file, or you compile this file and link it with other files to produce
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an executable, this file does not by itself cause the resulting executable to be covered
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by the GNU General Public License. This exception does not however invalidate any other
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reasons why the executable file might be covered by the GNU General Public License.
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*/
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#ifndef __TBB_range_iterator_H
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#define __TBB_range_iterator_H
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#include "../tbb_stddef.h"
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#if __TBB_CPP11_STD_BEGIN_END_PRESENT && __TBB_CPP11_AUTO_PRESENT && __TBB_CPP11_DECLTYPE_PRESENT
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#include <iterator>
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#endif
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namespace tbb {
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// iterators to first and last elements of container
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namespace internal {
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#if __TBB_CPP11_STD_BEGIN_END_PRESENT && __TBB_CPP11_AUTO_PRESENT && __TBB_CPP11_DECLTYPE_PRESENT
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using std::begin;
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using std::end;
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template<typename Container>
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auto first(Container& c)-> decltype(begin(c)) {return begin(c);}
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template<typename Container>
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auto first(const Container& c)-> decltype(begin(c)) {return begin(c);}
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template<typename Container>
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auto last(Container& c)-> decltype(begin(c)) {return end(c);}
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template<typename Container>
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auto last(const Container& c)-> decltype(begin(c)) {return end(c);}
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#else
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template<typename Container>
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typename Container::iterator first(Container& c) {return c.begin();}
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template<typename Container>
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typename Container::const_iterator first(const Container& c) {return c.begin();}
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template<typename Container>
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typename Container::iterator last(Container& c) {return c.end();}
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template<typename Container>
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typename Container::const_iterator last(const Container& c) {return c.end();}
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#endif
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template<typename T, size_t size>
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T* first(T (&arr) [size]) {return arr;}
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template<typename T, size_t size>
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T* last(T (&arr) [size]) {return arr + size;}
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} //namespace internal
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} //namespace tbb
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#endif // __TBB_range_iterator_H
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