static const bool has_infinity;
(until C++11)static constexpr bool has_infinity;
(since C++11)The value of std::numeric_limits<T>::has_infinity is true for all types T capable of representing the positive infinity as a distinct special value. This constant is meaningful for all floating-point types and is guaranteed to be true if std::numeric_limits<T>::is_iec559 == true.
T value of std::numeric_limits<T>::has_infinity /* non-specialized */ false bool false char false signed char false unsigned char false wchar_t false char8_t (since C++20) false char16_t (since C++11) false char32_t (since C++11) false short false unsigned short false int false unsigned int false long false unsigned long false long long (since C++11) false unsigned long long (since C++11) false float usually true double usually true long double usually true [edit] Example [edit] See also returns the positive infinity value of the given floating-point type
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