.title isdigit Return TRUE if digit argument .ident /000004/ ; ;+ ; ; Index Test for digit argument ; ; Usage ; ; isdigit(c); ; int c; ; ; Description ; ; Return 1 if c is an Ascii digit, 0 otherwise. ; ; Bugs ; ;- ; ; Edit history ; 000001 05-Mar-80 MM Initial edit ; 000002 10-Mar-82 MM Use ctype ; 000003 06-Jun-82 MM Don't mask parity ; 000004 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 isdigit:: mov #D,r0 ; Get the mask ;03 jmp $$ctype ; Do it ;03 .end