std::char_traits<CharT>::to_int_type

 

C++

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Freestanding and hosted

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Named requirements

Feature test macros (C++20)

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Symbols index

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Strings library

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Classes

basic_string

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char_traits

 

std::char_traits

Member functions

char_traits::assign

char_traits::eqchar_traits::lt

char_traits::move

char_traits::copy

char_traits::compare

char_traits::length

char_traits::find

char_traits::to_char_type

char_traits::to_int_type

char_traits::eq_int_type

char_traits::eof

char_traits::not_eof

 

static int_type to_int_type( char_type c );		(until C++11)
static constexpr int_type to_int_type( char_type c ) noexcept;		(since C++11)

Converts a value of char_type to int_type.

Parameters

c

-

value to convert

Return value

A value equivalent to c.

Complexity

Constant.

Notes

For every valid value of char_type, there must be a unique value of int_type distinct from eof(). For example, a common implementation of char_traits<char>::eof() is return -1, and a corresponding valid implementation of char_traits<char>::to_int_type(c) is return (unsigned char)c.