Str.asciiTolower

Convert a character to ASCII lower case.

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.

struct Str
static
char
asciiTolower
(
char c
)

Parameters

c char

any character

Return: the result of converting @c to lower case. If @c is not an ASCII upper case letter, @c is returned unchanged.

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