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adjacent_find.hpp
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binary_search.hpp
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copy.hpp
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copy_backward.hpp
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count.hpp
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count_if.hpp
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equal.hpp
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equal_range.hpp
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fill.hpp
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fill_n.hpp
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find.hpp
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find_end.hpp
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find_first_of.hpp
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find_if.hpp
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for_each.hpp
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generate.hpp
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heap_algorithm.hpp
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inplace_merge.hpp
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lexicographical_compare.hpp
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lower_bound.hpp
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max_element.hpp
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merge.hpp
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min_element.hpp
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mismatch.hpp
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nth_element.hpp
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partial_sort.hpp
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partial_sort_copy.hpp
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partition.hpp
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permutation.hpp
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random_shuffle.hpp
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remove.hpp
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remove_copy.hpp
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remove_copy_if.hpp
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remove_if.hpp
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replace.hpp
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replace_copy.hpp
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replace_copy_if.hpp
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replace_if.hpp
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reverse.hpp
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reverse_copy.hpp
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rotate.hpp
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rotate_copy.hpp
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search.hpp
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search_n.hpp
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set_algorithm.hpp
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sort.hpp
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stable_partition.hpp
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stable_sort.hpp
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swap_ranges.hpp
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transform.hpp
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unique.hpp
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unique_copy.hpp
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upper_bound.hpp
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/usr/include/boost/range/algorithm/random_shuffle.hpp
(3569B)
// Copyright Neil Groves 2009. Use, modification and // distribution is subject to the Boost Software License, Version // 1.0. (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) // // // For more information, see http://www.boost.org/libs/range/ // #ifndef BOOST_RANGE_ALGORITHM_RANDOM_SHUFFLE_HPP_INCLUDED #define BOOST_RANGE_ALGORITHM_RANDOM_SHUFFLE_HPP_INCLUDED #include <boost/concept_check.hpp> #include <boost/range/begin.hpp> #include <boost/range/end.hpp> #include <boost/range/concepts.hpp> #include <algorithm> #ifdef BOOST_NO_CXX98_RANDOM_SHUFFLE #include <cstdlib> #endif namespace boost { namespace range { namespace detail { #ifdef BOOST_NO_CXX98_RANDOM_SHUFFLE // wrap std::rand as UniformRandomBitGenerator struct wrap_rand { typedef unsigned int result_type; static BOOST_CONSTEXPR result_type (min)() { return 0; } static BOOST_CONSTEXPR result_type (max)() { return RAND_MAX; } result_type operator()() { return std::rand(); } }; template< class RandomIt > inline void random_shuffle(RandomIt first, RandomIt last) { std::shuffle(first, last, wrap_rand()); } // wrap Generator as UniformRandomBitGenerator template< class Generator > struct wrap_generator { typedef unsigned int result_type; static const int max_arg = ((0u - 1u) >> 2) + 1; Generator& g; wrap_generator(Generator& gen) : g(gen) {} static BOOST_CONSTEXPR result_type (min)() { return 0; } static BOOST_CONSTEXPR result_type (max)() { return max_arg - 1; } result_type operator()() { return static_cast<result_type>(g(max_arg)); } }; template< class RandomIt, class Generator > inline void random_shuffle(RandomIt first, RandomIt last, Generator& gen) { std::shuffle(first, last, wrap_generator< Generator >(gen)); } #else using std::random_shuffle; #endif } // namespace detail /// \brief template function random_shuffle /// /// range-based version of the random_shuffle std algorithm /// /// \pre RandomAccessRange is a model of the RandomAccessRangeConcept /// \pre Generator is a model of the UnaryFunctionConcept template<class RandomAccessRange> inline RandomAccessRange& random_shuffle(RandomAccessRange& rng) { BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<RandomAccessRange> )); detail::random_shuffle(boost::begin(rng), boost::end(rng)); return rng; } /// \overload template<class RandomAccessRange> inline const RandomAccessRange& random_shuffle(const RandomAccessRange& rng) { BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<const RandomAccessRange> )); detail::random_shuffle(boost::begin(rng), boost::end(rng)); return rng; } /// \overload template<class RandomAccessRange, class Generator> inline RandomAccessRange& random_shuffle(RandomAccessRange& rng, Generator& gen) { BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<RandomAccessRange> )); detail::random_shuffle(boost::begin(rng), boost::end(rng), gen); return rng; } /// \overload template<class RandomAccessRange, class Generator> inline const RandomAccessRange& random_shuffle(const RandomAccessRange& rng, Generator& gen) { BOOST_RANGE_CONCEPT_ASSERT(( RandomAccessRangeConcept<const RandomAccessRange> )); detail::random_shuffle(boost::begin(rng), boost::end(rng), gen); return rng; } } // namespace range using range::random_shuffle; } // namespace boost #endif // include guard
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