std::numeric_limits::max_exponent - cppreference.com (original) (raw)

| static const int max_exponent; | | (until C++11) | | ----------------------------------- | | ------------- | | static constexpr int max_exponent; | | (since C++11) |

The value of std::numeric_limits<T>::max_exponent is the largest positive number n such that \(\scriptsize r^{n-1}\)rn-1
, where r is std::numeric_limits<T>::radix, is a representable finite value of the floating-point type T.

[edit] Standard specializations

[edit] Example

Demonstrates the relationships of max_exponent, max_exponent10, and max() for the type float:

Output:

max() = 3.40282e+38 max_exponent10 = 38   max() = 0x1.fffffep+127 max_exponent = 128

[edit] See also

| | the smallest negative power of ten that is a valid normalized floating-point value (public static member constant) [edit] | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | | one more than the smallest negative power of the radix that is a valid normalized floating-point value (public static member constant) [edit] | | | the largest integer power of 10 that is a valid finite floating-point value (public static member constant) [edit] |