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27 lines
756 B
C++
27 lines
756 B
C++
#ifndef SPROUT_ALGORITHM_IS_DECREASING_HPP
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#define SPROUT_ALGORITHM_IS_DECREASING_HPP
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#include <iterator>
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#include <sprout/config.hpp>
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#include <sprout/algorithm/is_sorted.hpp>
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#include HDR_FUNCTIONAL_SSCRISK_CEL_OR_SPROUT
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namespace sprout {
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//
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// is_decreasing
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//
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// recursion depth:
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// [first, last) is RandomAccessIterator -> O(log N)
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// otherwise -> O(N)
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//
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template<typename ForwardIterator>
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inline SPROUT_CONSTEXPR bool
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is_decreasing(ForwardIterator first, ForwardIterator last) {
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return sprout::is_sorted(
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first, last,
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NS_SSCRISK_CEL_OR_SPROUT::greater<typename std::iterator_traits<ForwardIterator>::value_type>()
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);
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_ALGORITHM_IS_DECREASING_HPP
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