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40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
#ifndef SPROUT_ALGORITHM_LEXICOGRAPHICAL_COMPARE_HPP
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#define SPROUT_ALGORITHM_LEXICOGRAPHICAL_COMPARE_HPP
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#include <sprout/config.hpp>
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#include <sprout/iterator/operation.hpp>
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#include HDR_FUNCTIONAL_SSCRISK_CEL_OR_SPROUT
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namespace sprout {
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// Copyright (C) 2011 RiSK (sscrisk)
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// 25.4.8 Lexicographical comparison
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template<typename InputIterator1, typename InputIterator2, typename Compare>
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inline SPROUT_CONSTEXPR bool lexicographical_compare(
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InputIterator1 first1,
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InputIterator1 last1,
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InputIterator2 first2,
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InputIterator2 last2,
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Compare comp
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)
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{
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return first2 == last2 ? false
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: first1 == last1 || comp(*first1, *first2) ? true
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: comp(*first2, *first1) ? false
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: sprout::lexicographical_compare(sprout::next(first1), last1, sprout::next(first2), last2, comp)
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;
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}
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template<typename InputIterator1, typename InputIterator2>
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inline SPROUT_CONSTEXPR bool lexicographical_compare(
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InputIterator1 first1,
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InputIterator1 last1,
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InputIterator2 first2,
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InputIterator2 last2
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)
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{
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return sprout::lexicographical_compare(first1, last1, first2, last2, NS_SSCRISK_CEL_OR_SPROUT::less<decltype(*first1 + *first2)>());
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_ALGORITHM_LEXICOGRAPHICAL_COMPARE_HPP
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