tolower

Convert a character to ASCII lower case.

If the character is not an ASCII upper case letter, it is returned unchanged.

Unlike the standard C library `tolower()` function, this only recognizes standard ASCII letters and ignores the locale, returning all non-ASCII characters unchanged, even if they are lower case letters in a particular character set. Also unlike the standard library function, this takes and returns a char, not an int, so don't call it on `EOF` but no need to worry about casting to `guchar` before passing a possibly non-ASCII character in.

Example: Convert a character to lower case:

public static int main (string[] args) {
	// Output: ``aa1 !``
	print ("%c", 'A'.tolower ());
	print ("%c", 'a'.tolower ());
	print ("%c", '1'.tolower ());
	print ("%c", ' '.tolower ());
	print ("%c", '!'.tolower ());
	print ("%c", '\n'.tolower ());
	return 0;
}

valac --pkg glib-2.0 char.tolower.vala

Parameters:

c	any character

Returns:

the result of the conversion