; int ispunct (int c);
;
- .export _ispunct
- .include "ctype.inc"
+ .export _ispunct
+ .include "ctype.inc"
_ispunct:
- cpx #>0 ; Char range OK?
- bne @L1 ; Jump if no
- tay
- lda __ctype,y ; Get character classification
- and #CT_NOT_PUNCT ; Mask relevant bits
- cmp #1 ; If false, then set "borrow" flag
- lda #0
- sbc #0 ; Invert logic
- rts ; Return NOT (space | control | digit | alpha)
+ cpx #>0 ; Char range OK?
+ bne @L1 ; Jump if no
+ tay
+ lda __ctype,y ; Get character classification
+ and #CT_NOT_PUNCT ; Mask relevant bits
+ cmp #1 ; If false, then set "borrow" flag
+ lda #0
+ sbc #0 ; Invert logic
+ rts ; Return NOT (space | control | digit | alpha)
-@L1: lda #<0 ; Return false
- tax
- rts
+@L1: lda #<0 ; Return false
+ tax
+ rts