Sprout/sprout/algorithm/clamp.hpp
2018-12-30 17:25:21 +09:00

38 lines
1.3 KiB
C++

/*=============================================================================
Copyright (c) 2011-2018 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef SPROUT_ALGORITHM_CLAMP_HPP
#define SPROUT_ALGORITHM_CLAMP_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/type_traits/identity.hpp>
#include HDR_FUNCTIONAL_SSCRISK_CEL_OR_SPROUT
namespace sprout {
//
// clamp
//
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) {
return comp(value, low) ? low
: comp(high, value) ? high
: value
;
}
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) {
return sprout::clamp(
value, low, high,
NS_SSCRISK_CEL_OR_SPROUT::less<T>()
);
}
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_CLAMP_HPP