mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-29 01:03:45 +00:00
96 lines
2.8 KiB
ReStructuredText
96 lines
2.8 KiB
ReStructuredText
.. _sprout-algorithm-minmax:
|
|
###############################################################################
|
|
minmax
|
|
###############################################################################
|
|
|
|
Interface
|
|
========================================
|
|
.. sourcecode:: c++
|
|
|
|
template<typename T>
|
|
inline SPROUT_CONSTEXPR sprout::pair<T const&, T const&>
|
|
minmax(T const& a, T const& b);
|
|
|
|
template<typename T, typename Compare>
|
|
inline SPROUT_CONSTEXPR sprout::pair<T const&, T const&>
|
|
minmax(T const& a, T const& b, Compare comp);
|
|
|
|
Requires
|
|
========================================
|
|
|
|
| Type T shall be LessThanComparable.
|
|
|
|
Returns
|
|
========================================
|
|
|
|
| ``pair<T const&, T const&>(b, a)`` if b is smaller than a, and ``pair<T const&, T const&>(a, b)`` otherwise.
|
|
|
|
Remarks
|
|
========================================
|
|
|
|
| Returns ``pair<T const&, T const&>(a, b)`` when the arguments are equivalent.
|
|
|
|
Remarks
|
|
========================================
|
|
|
|
Examples
|
|
========================================
|
|
.. sourcecode:: c++
|
|
|
|
#include <sprout/algorithm/minmax.hpp>
|
|
#include <sprout/array.hpp>
|
|
using namespace sprout;
|
|
|
|
SPROUT_STATIC_CONSTEXPR auto input = array<int, 10>{{-1, 1}};
|
|
SPROUT_STATIC_CONSTEXPR auto result = sprout::minmax(input[0], input[1]);
|
|
static_assert(result.first == -1, "min value is -1.");
|
|
static_assert(result.second == 1, "max value is 1.");
|
|
|
|
Complexity
|
|
========================================
|
|
|
|
| Exactly one comparison.
|
|
|
|
-------------------------------------------------------------------------------
|
|
|
|
Interface
|
|
========================================
|
|
.. sourcecode:: c++
|
|
|
|
template<typename T, typename Compare>
|
|
inline SPROUT_CONSTEXPR sprout::pair<T, T>
|
|
minmax(std::initializer_list<T> t, Compare comp);
|
|
|
|
template<typename T>
|
|
inline SPROUT_CONSTEXPR sprout::pair<T, T>
|
|
minmax(std::initializer_list<T> t);
|
|
|
|
Requires
|
|
========================================
|
|
|
|
| T is LessThanComparable and CopyConstructible and ``t.size() > 0``.
|
|
|
|
Returns
|
|
========================================
|
|
|
|
| ``pair<T, T>(x, y)``, where x has the smallest and y has the largest value in the initializer list.
|
|
|
|
Remarks
|
|
========================================
|
|
|
|
| x is a copy of the leftmost argument when several arguments are equivalent to the smallest.
|
|
| y is a copy of the rightmost argument when several arguments are equivalent to the largest.
|
|
| If an implementation not support C++14 initializer_list (SPROUT_NO_CXX14_INITIALIZER_LIST defined), then this function is not specified constexpr.
|
|
|
|
Complexity
|
|
========================================
|
|
|
|
| At most ``(3/2) * t.size()`` applications of the corresponding predicate.
|
|
| Recursive function invocations in *O(logN)* (logarithmic) depth.
|
|
|
|
Header
|
|
========================================
|
|
|
|
| ``sprout/algorithm/minmax.hpp``
|
|
| Convenience header: ``sprout/algorithm.hpp``
|
|
|