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std::numeric_limits<T>::max

Defined in header `<limits>`
static T max() throw();		(until C++11)
static constexpr T max() noexcept;		(since C++11)

Returns the maximum finite value representable by the numeric type T. Meaningful for all bounded types.

Return value

`T`	`std::numeric_limits<T>::max()`
/* non-specialized */	`T()`
`bool`	`true`
`char`	`CHAR_MAX`
`signed char`	`SCHAR_MAX`
`unsigned char`	`UCHAR_MAX`
`wchar_t`	`WCHAR_MAX`
`char8_t`	`UCHAR_MAX`
`char16_t`	`UINT_LEAST16_MAX`
`char32_t`	`UINT_LEAST32_MAX`
`short`	`SHRT_MAX`
`unsigned short`	`USHRT_MAX`
`int`	`INT_MAX`
`unsigned int`	`UINT_MAX`
`long`	`LONG_MAX`
`unsigned long`	`ULONG_MAX`
`long long`	`LLONG_MAX`
`unsigned long long`	`ULLONG_MAX`
`float`	`FLT_MAX`
`double`	`DBL_MAX`
`long double`	`LDBL_MAX`

Example

Demonstrates the use of max() with some fundamental types and some standard library typedefs (the output is system-specific).

#include <limits>
#include <cstddef>
#include <iostream>
int main()
{
    std::cout << "short: " << std::dec << std::numeric_limits<short>::max()
              << " or " << std::hex << std::showbase << std::numeric_limits<short>::max() << '\n'
              << "int: " << std::dec << std::numeric_limits<int>::max()
              << " or " << std::hex << std::numeric_limits<int>::max() << '\n' << std::dec
              << "streamsize: " << std::dec << std::numeric_limits<std::streamsize>::max()
              << " or " << std::hex << std::numeric_limits<std::streamsize>::max() << '\n'
              << "size_t: " << std::dec << std::numeric_limits<std::size_t>::max()
              << " or " << std::hex << std::numeric_limits<std::size_t>::max() << '\n'
              << "float: " << std::numeric_limits<float>::max()
              << " or " << std::hexfloat << std::numeric_limits<float>::max() << '\n'
              << "double: " << std::defaultfloat << std::numeric_limits<double>::max()
              << " or " << std::hexfloat << std::numeric_limits<double>::max() << '\n';
}

Output:

short: 32767 or 0x7fff
int: 2147483647 or 0x7fffffff
size_t: 18446744073709551615 or 0xffffffffffffffff
streamsize: 9223372036854775807 or 0x7fffffffffffffff
float: 3.40282e+38 or 0x1.fffffep+127
double: 1.79769e+308 or 0x1.fffffffffffffp+1023

lowest [static] (C++11)	returns the lowest finite value of the given type (public static member function)
min [static]	returns the smallest finite value of the given type (public static member function)

std::numeric_limits<T>::max

Return value

Example

See also