.title isgraph Test for graphic alphabetic argument .ident /000003/ ; ;+ ; ; Index Test for graphic argument ; ; Usage ; ; isgraph(c); ; int c; ; ; Description ; ; Return non-zero if c is a graphic character, 0 otherwise. ; ; Graphics characters include letters, digits, and punctuation. ; Space, tab, etc. are not graphics. ; ; Bugs ; ;- ; ; Edit history ; 000001 10-Mar-82 MM Use ctype ; 000002 06-Jun-82 MM Don't mask parity ; 000003 07-Jun-82 MM Redone ; ; The following definitions must match ctype.mac and ctype.h ; U = 0001 ; UPPER case alpha L = 0002 ; lower case alpha D = 0004 ; digit S = 0010 ; whitespace (tab, backspace, lf, etc) P = 0020 ; punctuation C = 0040 ; control X = 0100 ; hex alpha B = 0200 ; blank .psect c$code isgraph:: mov #P+U+L+D,r0 ; Get the mask ;03 jmp $$ctype ; Do it .end