• Jason Hobbs's avatar
    Add isblank · 93337abb
    Jason Hobbs authored
    Existing ctype checks are implemented using a 256 byte lookup table,
    allowing each character to be in any of 8 character classes. Since there
    are 8 existing character classes without the blank class, I implemented
    isblank without using the lookup table.  Since there are only two blank
    characters - tab and space - this is a more reasonable approach than
    doubling the size of the lookup table to accommodate one more class.
    Signed-off-by: default avatarJason Hobbs <jason.hobbs@calxeda.com>
ctype.h 1.54 KB