Library: Language support
Header
The header <limits> is part of the Language support library of the C++ Standard Library. It provides a C++ program with information about various properties of the implementation's representation of the fundamental types. The header defines the class template numeric_limits and specializations of the template on all fundamental arithmetic types.
namespace std {
template<class T> class numeric_limits;
enum float_round_style;
enum float_denorm_style;
template<> class numeric_limits<bool>;
template<> class numeric_limits<char>;
template<> class numeric_limits<signed char>;
template<> class numeric_limits<unsigned char>;
template<> class numeric_limits<wchar_t>;
template<> class numeric_limits<short>;
template<> class numeric_limits<int>;
template<> class numeric_limits<long>;
template<> class numeric_limits<unsigned short>;
template<> class numeric_limits<unsigned int>;
template<> class numeric_limits<unsigned long>;
template<> class numeric_limits<float>;
template<> class numeric_limits<double>;
template<> class numeric_limits<long double>;
}
ISO/IEC 14882:1998 -- International Standard for Information Systems --Programming Language C++, Section 18.2.1