mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
58 lines
1.7 KiB
Text
58 lines
1.7 KiB
Text
|
.. _sprout-algorithm-clamp:
|
||
|
|
###############################################################################
|
||
|
|
clamp
|
||
|
|
###############################################################################
|
||
|
|
|
||
|
|
Interface
|
||
|
|
========================================
|
||
|
|
.. sourcecode:: c++
|
||
|
|
|
||
|
|
template<typename T>
|
||
|
|
inline SPROUT_CONSTEXPR T const&
|
||
|
|
clamp(T const& value, typename sprout::identity<T>::type const& low, typename sprout::identity<T>::type const& high);
|
||
|
|
|
||
|
|
template<typename T, typename Compare>
|
||
|
|
inline SPROUT_CONSTEXPR T const&
|
||
|
|
clamp(T const& value, typename sprout::identity<T>::type const& low, typename sprout::identity<T>::type const& high, Compare comp);
|
||
|
|
|
||
|
|
Requires
|
||
|
|
========================================
|
||
|
|
|
||
|
|
| Type T is LessThanComparable.
|
||
|
|
|
||
|
|
Returns
|
||
|
|
========================================
|
||
|
|
|
||
|
|
| low if the following corresponding conditions hold: ``value < low``, ``comp(value, low)``.
|
||
|
|
| high if the following corresponding conditions hold: ``high < value``, ``comp(high, value)``.
|
||
|
|
| Otherwise, returns value.
|
||
|
|
|
||
|
|
Remarks
|
||
|
|
========================================
|
||
|
|
|
||
|
|
| Using clamp with floating point numbers may give unexpected results if one of the values is NaN.
|
||
|
|
|
||
|
|
Complexity
|
||
|
|
========================================
|
||
|
|
|
||
|
|
| Exactly one or two comparisons.
|
||
|
|
|
||
|
|
Examples
|
||
|
|
========================================
|
||
|
|
.. sourcecode:: c++
|
||
|
|
|
||
|
|
#include <sprout/algorithm/clamp.hpp>
|
||
|
|
#include <sprout/array.hpp>
|
||
|
|
using namespace sprout;
|
||
|
|
|
||
|
|
SPROUT_STATIC_CONSTEXPR auto input = array<int, 10>{{0, 10}};
|
||
|
|
SPROUT_STATIC_CONSTEXPR auto result = sprout::clamp(20, input[0], input[1]);
|
||
|
|
static_assert(result == 10, "clamped value is 10.");
|
||
|
|
|
||
|
|
Header
|
||
|
|
========================================
|
||
|
|
|
||
|
|
| ``sprout/algorithm/clamp.hpp``
|
||
|
|
| Convenience header: ``sprout/algorithm.hpp``
|
||
|
|
|