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43 lines
1.2 KiB
ReStructuredText
43 lines
1.2 KiB
ReStructuredText
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.. _sprout-algorithm-is_decreasing:
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###############################################################################
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is_decreasing
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###############################################################################
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Interface
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========================================
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.. sourcecode:: c++
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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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Returns
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========================================
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| Same as ``is_sorted(first, last, greater<>())``.
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Examples
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========================================
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.. sourcecode:: c++
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#include <sprout/algorithm/is_decreasing.hpp>
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#include <sprout/array.hpp>
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#include <sprout/container.hpp>
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using namespace sprout;
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SPROUT_STATIC_CONSTEXPR auto input = array<int, 10>{{5, 5, 4, 4, 3, 3, 2, 2, 1, 1}};
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SPROUT_STATIC_CONSTEXPR auto result = sprout::is_decreasing(begin(input), end(input));
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static_assert(result, "input is decreasing.");
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Complexity
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========================================
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| Recursive function invocations in *O(logN)* (logarithmic) depth.
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Header
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========================================
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| ``sprout/algorithm/is_decreasing.hpp``
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| Convenience header: ``sprout/algorithm.hpp``
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