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| Static constants | ||||
numeric_limits::is_integer | ||||
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| Static member functions | ||||
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| Helper types | ||||
staticconstbool is_integer; | (until C++11) | |
staticconstexprbool is_integer; | (since C++11) | |
The value ofstd::numeric_limits<T>::is_integer istrue for all integer arithmetic typesT andfalse otherwise. This constant is meaningful for all specializations.
T | value ofstd::numeric_limits<T>::is_integer |
| /* non-specialized */ | false |
| bool | true |
| char | true |
| signedchar | true |
| unsignedchar | true |
| wchar_t | true |
| char8_t(since C++20) | true |
| char16_t(since C++11) | true |
| char32_t(since C++11) | true |
| short | true |
| unsignedshort | true |
| int | true |
| unsignedint | true |
| long | true |
| unsignedlong | true |
| longlong(since C++11) | true |
| unsignedlonglong(since C++11) | true |
| float | false |
| double | false |
| longdouble | false |
#include <cstddef>#include <cstdint>#include <limits> static_assert(std::numeric_limits<bool>::is_integer&&std::numeric_limits<std::size_t>::is_integer&&std::numeric_limits<std::int32_t>::is_integer&&std::numeric_limits<std::int64_t>::is_integer&&std::numeric_limits<decltype(42)>::is_integer&&!std::numeric_limits<int*>::is_integer&&!std::numeric_limits<float>::is_integer&&!std::numeric_limits<double>::is_integer&&!std::numeric_limits<longdouble>::is_integer&&!std::numeric_limits<decltype([](){})>::is_integer// P0315R4); int main(){}
(C++11) | checks if a type is an integral type (class template)[edit] |
[static] | identifies signed types (public static member constant)[edit] |
[static] | identifies exact types (public static member constant)[edit] |
[static] | identifies types that represent a finite set of values (public static member constant)[edit] |
