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std::numeric_limits<T>::is_specialized

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static const bool is_specialized;
(until C++11)
static constexpr bool is_specialized;
(since C++11)

The value of std::numeric_limits<T>::is_specialized is true for all T for which there exists a specialization of std::numeric_limits.

[edit] Standard specializations

T value of std::numeric_limits<T>::is_specialized
/* non-specialized */ false
bool true
char true
signed char true
unsigned char true
wchar_t true
char8_t (C++20) true
char16_t (C++11) true
char32_t (C++11) true
short true
unsigned short true
int true
unsigned int true
long true
unsigned long true
long long (C++11) true
unsigned long long (C++11) true
float true
double true
long double true

[edit] See also

[static]
identifies integer types
(public static member constant) [edit]
[static]
identifies the IEC 559/IEEE 754 floating-point 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]