; int isalpha (int c);
;
- .export _isalpha
- .include "ctype.inc"
+ .export _isalpha
+ .include "ctype.inc"
_isalpha:
- cpx #$00 ; Char range ok?
- bne @L1 ; Jump if no
- tay
- lda __ctype,y ; Get character classification
- and #CT_ALPHA ; Mask character bits
- rts
+ cpx #$00 ; Char range ok?
+ bne @L1 ; Jump if no
+ tay
+ lda __ctype,y ; Get character classification
+ and #CT_ALPHA ; Mask character bits
+ rts
-@L1: lda #$00 ; Return false
- tax
- rts
+@L1: lda #$00 ; Return false
+ tax
+ rts