std::char_traits::not_eof

From cppreference.com
< cpplrm; | stringlrm; | char traits
static int_type not_eof( int_type e );
(until C++11)
static constexpr int_type not_eof( int_type e ) noexcept;
(since C++11)

Checks whether e is not equivalent to eof value.

Formally

  • if X::eq_int_type(e, X::eof()) is false, returns e
  • otherwise, returns a value f such that X::eq_int_type(f, X::eof()) is false

Parameters

e - value to analyze

Return value

e if e and eof value are not equivalent, returns some other non-eof value otherwise.

Complexity

Constant.

See also

[static]
returns an eof value
(public static member function)