mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-29 01:03:45 +00:00
68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011 RiSK (sscrisk)
|
|
https://github.com/sscrisk/CEL---ConstExpr-Library
|
|
|
|
Copyright (c) 2011-2017 Bolero MURAKAMI
|
|
https://github.com/bolero-MURAKAMI/Sprout
|
|
|
|
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
=============================================================================*/
|
|
#ifndef SPROUT_CSTDLIB_ABS_HPP
|
|
#define SPROUT_CSTDLIB_ABS_HPP
|
|
|
|
#include <type_traits>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/type_traits/is_signed.hpp>
|
|
#include <sprout/type_traits/is_unsigned.hpp>
|
|
|
|
namespace sprout {
|
|
|
|
// 7.20.6.1 abs, labs, and llabs function
|
|
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>
|
|
inline SPROUT_CONSTEXPR typename std::enable_if<
|
|
std::is_integral<IntType>::value && sprout::is_signed<IntType>::value,
|
|
IntType
|
|
>::type
|
|
abs(IntType j) {
|
|
return j < 0 ? -j : j;
|
|
}
|
|
|
|
template<typename IntType>
|
|
inline SPROUT_CONSTEXPR typename std::enable_if<
|
|
std::is_integral<IntType>::value && sprout::is_unsigned<IntType>::value,
|
|
IntType
|
|
>::type
|
|
abs(IntType j) {
|
|
return j;
|
|
}
|
|
} // anonymous-namespace
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_CSTDLIB_ABS_HPP
|