std::numeric_limits::is_signed
From cppreference.com
< cpp | types | numeric limits
| static const bool is_signed; |
(until C++11) | |
| static constexpr bool is_signed; |
(since C++11) | |
The value of std::numeric_limits<T>::is_signed is true for all signed arithmetic types T and false for the unsigned types. This constant is meaningful for all specializations.
[edit] Standard specializations
T
|
value of std::numeric_limits<T>::is_signed |
| /* non-specialized */ | false |
| bool | false |
| char | implementation-defined |
| signed char | true |
| unsigned char | false |
| wchar_t | implementation-defined |
| char16_t | false |
| char32_t | false |
| short | true |
| unsigned short | false |
| int | true |
| unsigned int | false |
| long | true |
| unsigned long | false |
| long long | true |
| unsigned long long | false |
| float | true |
| double | true |
| long double | true |
[edit] See also
| (C++11) |
checks if a type is signed integer type (class template) |
| [static] |
identifies integer types (public static member constant) |
| [static] |
identifies exact types (public static member constant) |
| [static] |
identifies types that represent a finite set of values (public static member constant) |