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add floor, ceil, trunc, round

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This commit is contained in:
bolero-MURAKAMI 2012-07-05 00:09:44 +09:00
parent c6fb8af0c5
commit 77f058a34c
12 changed files with 236 additions and 11 deletions
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8
sprout/detail/math/float.hpp
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@ -1,9 +1,11 @@
#ifndef SPROUT_DETAIL_FLOAT_HPP
#define SPROUT_DETAIL_FLOAT_HPP
#include <cmath>
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/math/abs.hpp>
#include <sprout/math/floor.hpp>
#include <sprout/math/round.hpp>
#include <sprout/type_traits/enabler_if.hpp>
namespace sprout {
@ -89,7 +91,7 @@ namespace sprout {
template<typename FloatType, typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler>
inline SPROUT_CONSTEXPR int
float_digit_of_impl(FloatType val) {
using std::floor;
using sprout::floor;
return static_cast<int>((val - floor(val)) * 10);
}
template<typename FloatType>
@ -104,7 +106,7 @@ namespace sprout {
template<typename FloatType, typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler>
inline SPROUT_CONSTEXPR FloatType
float_round_impl(FloatType val, FloatType p10) {
using std::round;
using sprout::round;
return round(val * p10) / p10;
}
template<typename FloatType>