63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
// Boost.Geometry Index
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//
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// Copyright (c) 2017 Adam Wulkiewicz, Lodz, Poland.
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//
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_NTH_ELEMENT_HPP
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#define BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_NTH_ELEMENT_HPP
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#include <algorithm>
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namespace boost { namespace geometry { namespace index { namespace detail {
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// See https://svn.boost.org/trac/boost/ticket/12861
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// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58800
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// https://gcc.gnu.org/develop.html#timeline
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// 20120920 4.7.2 - no bug
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// 20130322 4.8.0 - no bug
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// 20130411 4.7.3 - no bug
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// 20130531 4.8.1 - no bug
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// 20131016 4.8.2 - bug
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// 20140422 4.9.0 - fixed
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// 20140522 4.8.3 - fixed
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// 20140612 4.7.4 - fixed
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// 20140716 4.9.1 - fixed
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#if defined(__GLIBCXX__) && (__GLIBCXX__ == 20131016)
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#warning "std::nth_element replaced with std::sort, libstdc++ bug workaround.";
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template <typename RandomIt>
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void nth_element(RandomIt first, RandomIt , RandomIt last)
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{
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std::sort(first, last);
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}
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template <typename RandomIt, typename Compare>
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void nth_element(RandomIt first, RandomIt , RandomIt last, Compare comp)
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{
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std::sort(first, last, comp);
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}
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#else
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template <typename RandomIt>
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void nth_element(RandomIt first, RandomIt nth, RandomIt last)
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{
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std::nth_element(first, nth, last);
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}
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template <typename RandomIt, typename Compare>
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void nth_element(RandomIt first, RandomIt nth, RandomIt last, Compare comp)
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{
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std::nth_element(first, nth, last, comp);
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}
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#endif
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}}}} // namespace boost::geometry::index::detail
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#endif // BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_NTH_ELEMENT_HPP
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