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add sprout::abs, fabs

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add cinttypes
This commit is contained in:
bolero-MURAKAMI 2012-05-05 15:57:55 +09:00
parent 8dadcb359a
commit 2fb6cea457
13 changed files with 211 additions and 37 deletions
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46
sprout/cstdlib/div.hpp
View file

@ -5,42 +5,34 @@
#include <cstdlib>
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/utility/enabler_if.hpp>
namespace sprout {
// Copyright (C) 2011 RiSK (sscrisk)
namespace detail {
# define SPROUT_DIV_T_TRAITS_IMPL(DIV_T) \
typedef DIV_T type; \
static SPROUT_CONSTEXPR std::size_t offsetof_quot = offsetof(DIV_T, quot); \
static SPROUT_CONSTEXPR std::size_t offsetof_rem = offsetof(DIV_T, rem)
template<typename T>
struct div_t_traits {};
template<>
struct div_t_traits<int> {
public:
SPROUT_DIV_T_TRAITS_IMPL(std::div_t);
};
template<>
struct div_t_traits<long> {
public:
SPROUT_DIV_T_TRAITS_IMPL(std::ldiv_t);
};
template<>
struct div_t_traits<long long> {
public:
SPROUT_DIV_T_TRAITS_IMPL(std::lldiv_t);
};
# undef SPROUT_DIV_T_TRAITS_IMPL
extern void* enabler;
# define SPROUT_DETAIL_DIV_T_TRAITS_IMPL(INT_T, DIV_T) \
template<> \
struct div_t_traits<INT_T> { \
public: \
typedef DIV_T type; \
static SPROUT_CONSTEXPR std::size_t offsetof_quot = offsetof(DIV_T, quot); \
static SPROUT_CONSTEXPR std::size_t offsetof_rem = offsetof(DIV_T, rem); \
}
SPROUT_DETAIL_DIV_T_TRAITS_IMPL(int, std::div_t);
SPROUT_DETAIL_DIV_T_TRAITS_IMPL(long, std::ldiv_t);
SPROUT_DETAIL_DIV_T_TRAITS_IMPL(long long, std::lldiv_t);
# undef SPROUT_DETAIL_DIV_T_TRAITS_IMPL
template<
typename T,
typename std::enable_if<
typename sprout::enabler_if<
sprout::detail::div_t_traits<T>::offsetof_quot == 0
>::type*& = sprout::detail::enabler
>::type = sprout::enabler
>
SPROUT_CONSTEXPR typename sprout::detail::div_t_traits<T>::type div_impl(T const& numer, T const& denom) {
return {numer / denom, numer % denom};
@ -48,9 +40,9 @@ namespace sprout {
template<
typename T,
typename std::enable_if<
typename sprout::enabler_if<
sprout::detail::div_t_traits<T>::offsetof_rem == 0
>::type*& = sprout::detail::enabler
>::type = sprout::enabler
>
SPROUT_CONSTEXPR typename sprout::detail::div_t_traits<T>::type div_impl(T const &numer, T const& denom) {
return {numer % denom, numer / denom};
@ -66,7 +58,7 @@ namespace sprout {
return sprout::detail::div_impl(numer, denom);
}
SPROUT_CONSTEXPR std::lldiv_t lldiv(long long numer, long long denom) {
SPROUT_CONSTEXPR std::lldiv_t lldiv(long long numer, long long denom) {
return sprout::detail::div_impl(numer, denom);
}