Return c converted to uppercase.

Synopsis

Defined in header <boost/url/grammar/ci_string.hpp>

constexpr char
to_upper(
    char c);

Description

This function returns the character, converting it to uppercase if it is lowercase. The function is defined only for low-ASCII characters.

Example

assert( to_upper( 'a' ) == 'A' );

Exception Safety

Throws nothing.

Return Value

The converted character

Parameters

See Also

to_lower.

Convenience header <boost/url/grammar.hpp>