mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-12-23 21:25:49 +00:00
54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
#ifndef SPROUT_MATH_CEIL_HPP
|
|
#define SPROUT_MATH_CEIL_HPP
|
|
|
|
#include <cstdint>
|
|
#include <limits>
|
|
#include <type_traits>
|
|
#include <stdexcept>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/math/detail/config.hpp>
|
|
#include <sprout/math/isinf.hpp>
|
|
#include <sprout/math/equal_to.hpp>
|
|
#include <sprout/type_traits/enabler_if.hpp>
|
|
|
|
namespace sprout {
|
|
namespace math {
|
|
namespace detail {
|
|
template<typename FloatType>
|
|
inline SPROUT_CONSTEXPR FloatType
|
|
ceil_impl(FloatType x, FloatType x0) {
|
|
return sprout::math::equal_to(x, x0) ? x0
|
|
: x0 + 1
|
|
;
|
|
}
|
|
template<
|
|
typename FloatType,
|
|
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
|
|
>
|
|
inline SPROUT_CONSTEXPR FloatType
|
|
ceil(FloatType x) {
|
|
return sprout::math::isinf(x) ? x
|
|
: std::numeric_limits<std::uintmax_t>::max() < x || std::numeric_limits<std::uintmax_t>::max() < -x
|
|
? throw std::domain_error("ceil: Sorry, not implemented.")
|
|
: x < 0 ? -static_cast<FloatType>(static_cast<std::uintmax_t>(-x))
|
|
: sprout::math::detail::ceil_impl(x, static_cast<FloatType>(static_cast<std::uintmax_t>(x)))
|
|
;
|
|
}
|
|
|
|
template<
|
|
typename IntType,
|
|
typename sprout::enabler_if<std::is_integral<IntType>::value>::type = sprout::enabler
|
|
>
|
|
inline SPROUT_CONSTEXPR double
|
|
ceil(IntType x) {
|
|
return sprout::math::detail::ceil(static_cast<double>(x));
|
|
}
|
|
} // namespacedetailmath
|
|
|
|
using NS_SPROUT_MATH_DETAIL::ceil;
|
|
} // namespace math
|
|
|
|
using sprout::math::ceil;
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_MATH_CEIL_HPP
|