mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
61 lines
1.3 KiB
C++
61 lines
1.3 KiB
C++
#ifndef SPROUT_CSTDLIB_ABS_HPP
|
||
#define SPROUT_CSTDLIB_ABS_HPP
|
||
|
||
#include <type_traits>
|
||
#include <sprout/config.hpp>
|
||
#include <sprout/type_traits/enabler_if.hpp>
|
||
|
||
namespace sprout {
|
||
// Copyright (C) 2011 RiSK (sscrisk)
|
||
|
||
// 7.20.6.1 abs<62>Clabs<62>C‹y‚Ñ llabs ŠÖ<C5A0>”
|
||
inline SPROUT_CONSTEXPR int
|
||
abs(int j) {
|
||
return j < 0 ? -j : j;
|
||
}
|
||
|
||
inline SPROUT_CONSTEXPR long
|
||
labs(long j) {
|
||
return j < 0 ? -j : j;
|
||
}
|
||
|
||
inline SPROUT_CONSTEXPR long long
|
||
llabs(long long j) {
|
||
return j < 0 ? -j : j;
|
||
}
|
||
|
||
inline SPROUT_CONSTEXPR long
|
||
abs(long j) {
|
||
return sprout::labs(j);
|
||
}
|
||
|
||
inline SPROUT_CONSTEXPR long long
|
||
abs(long long j) {
|
||
return sprout::llabs(j);
|
||
}
|
||
|
||
namespace {
|
||
template<
|
||
typename IntType,
|
||
typename sprout::enabler_if<
|
||
std::is_integral<IntType>::value && std::is_signed<IntType>::value
|
||
>::type = sprout::enabler
|
||
>
|
||
inline SPROUT_CONSTEXPR IntType
|
||
abs(IntType j) {
|
||
return j < 0 ? -j : j;
|
||
}
|
||
template<
|
||
typename IntType,
|
||
typename sprout::enabler_if<
|
||
std::is_integral<IntType>::value && std::is_unsigned<IntType>::value
|
||
>::type = sprout::enabler
|
||
>
|
||
inline SPROUT_CONSTEXPR IntType
|
||
abs(IntType j) {
|
||
return j;
|
||
}
|
||
} // anonymous-namespace
|
||
} // namespace sprout
|
||
|
||
#endif // #ifndef SPROUT_CSTDLIB_ABS_HPP
|