King_DuckZ/Sprout
1
0
Fork 0
mirror of https://github.com/bolero-MURAKAMI/Sprout synced 2025-08-03 12:49:50 +00:00
Code Issues Releases Wiki Activity

add math comparison functions

Browse source
This commit is contained in:
bolero-MURAKAMI 2014-07-30 14:05:55 +09:00
parent ae77da19e1
commit 3df16007a5
14 changed files with 775 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

63
sprout/math/isgreater.hpp Normal file
View file

@ -0,0 +1,63 @@
/*=============================================================================
Copyright (c) 2011-2014 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_MATH_ISGREATER_HPP
#define SPROUT_MATH_ISGREATER_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/math/detail/config.hpp>
#include <sprout/math/isnan.hpp>
#include <sprout/type_traits/float_promote.hpp>
#include <sprout/type_traits/enabler_if.hpp>
namespace sprout {
namespace math {
namespace detail {
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
template<typename FloatType>
inline SPROUT_CONSTEXPR bool
builtin_isgreater(FloatType x, FloatType y) {
return __builtin_isgreater(x, y);
}
#endif
} // namespace detail
//
// isgreater
//
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR bool
isgreater(FloatType x, FloatType y) {
return
#if SPROUT_USE_BUILTIN_CMATH_FUNCTION
sprout::math::detail::builtin_isgreater(x, y)
#else
!sprout::math::isnan(x) && !sprout::math::isnan(y) && (x > y)
#endif
;
}
template<
typename ArithmeticType1,
typename ArithmeticType2,
typename sprout::enabler_if<
std::is_arithmetic<ArithmeticType1>::value && std::is_arithmetic<ArithmeticType2>::value
>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR bool
isgreater(ArithmeticType1 x, ArithmeticType2 y) {
typedef typename sprout::float_promote<ArithmeticType1, ArithmeticType2>::type type;
return sprout::math::isgreater(static_cast<type>(x), static_cast<type>(y));
}
} // namespace math
using sprout::math::isgreater;
} // namespace sprout
#endif // #ifndef SPROUT_MATH_ISGREATER_HPP