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

fix to_string(FloatType): support inf, NaN; bug(digit count)

Browse source
This commit is contained in:
bolero-MURAKAMI 2013-08-05 22:18:02 +09:00
parent 99547d3fe7
commit 9883dacfe2
2 changed files with 59 additions and 38 deletions
Download patch file Download diff file Expand all files Collapse all files

38
sprout/detail/math/float.hpp
View file

@ -75,37 +75,37 @@ namespace sprout {
//
// float_digits
//
template<typename FloatType>
inline SPROUT_CONSTEXPR int
float_digits_impl(FloatType val, FloatType n) {
return val / n < 1 ? 0
: 1 + sprout::detail::float_digits_impl(val, n * FloatType(10))
;
}
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR int
float_digits_impl(FloatType val) {
return val < 1 ? 0
: 1 + sprout::detail::float_digits_impl(val / 10)
;
}
template<typename FloatType>
inline SPROUT_CONSTEXPR int
float_digits(FloatType val) {
return val < 0
? val > -1 ? 1 : 1 + sprout::detail::float_digits_impl(-val / 10)
: val < 1 ? 1 : 1 + sprout::detail::float_digits_impl(val / 10)
? val > -1 ? 1 : 1 + sprout::detail::float_digits_impl(-val, FloatType(10))
: val < 1 ? 1 : 1 + sprout::detail::float_digits_impl(val, FloatType(10))
;
}
//
// float_digit_at
//
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
template<typename FloatType>
inline SPROUT_CONSTEXPR int
float_digit_of_impl(FloatType val) {
return static_cast<int>((val - sprout::math::floor(val)) * 10);
}
template<typename FloatType>
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR int
float_digit_at(FloatType val, int digits) {
return sprout::detail::float_digit_of_impl(val / sprout::detail::float_pow10<FloatType>(digits + 1));
@ -114,15 +114,15 @@ namespace sprout {
//
// float_round_at
//
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
template<typename FloatType>
inline SPROUT_CONSTEXPR FloatType
float_round_impl(FloatType val, FloatType p10) {
return sprout::math::round(val * p10) / p10;
}
template<typename FloatType>
template<
typename FloatType,
typename sprout::enabler_if<std::is_floating_point<FloatType>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR FloatType
float_round_at(FloatType val, int digits) {
return sprout::detail::float_round_impl(val, sprout::detail::float_pow10<FloatType>(digits));