std::numeric_limits<T>::is_bounded

 

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

See More

The value of std::numeric_limits<T>::is_bounded is true for all arithmetic types T that represent a finite set of values. While all fundamental types are bounded, this constant would be false in a specialization of std::numeric_limits for a library-provided arbitrary precision arithmetic type.

Standard specializations

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

Example

Run this code

#include <limits>
#include <ratio>

template <typename... Types>
constexpr bool all_bounded = (std::numeric_limits<Types>::is_bounded and ...);

static_assert(all_bounded<
    bool, char, signed char, unsigned char, wchar_t, char8_t, char16_t, char32_t,
    short, unsigned short, int, unsigned int, long, unsigned long, long long,
    unsigned long long, float, double, long double
>);

static_assert(not std::numeric_limits<std::exa>::is_bounded);

int main() {}

See also

is_integer [static]	identifies integer types (public static member constant)
is_signed [static]	identifies signed types (public static member constant)
is_exact [static]	identifies exact types (public static member constant)