Rewrite and filling of libc/ctype.c (thus adjusting copyright line). Use a simple one-liner for each of the functions. You can surely optimize the code some more, but I chose not to do that in order to keep it readable. When compiling with -Os the size differences are minimal. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Jordan Crouse <jordan.crouse@amd.com>