1
0
mirror of https://github.com/cc65/cc65.git synced 2024-11-04 17:04:58 +00:00
cc65/libsrc/common/ispunct.s

23 lines
395 B
ArmAsm
Raw Normal View History

;
; Ullrich von Bassewitz, 02.06.1998
;
; int ispunct (int c);
;
.export _ispunct
.include "ctype.inc"
_ispunct:
cpx #$00 ; Char range ok?
bne @L1 ; Jump if no
tay
lda __ctype,y ; Get character classification
eor #CT_NOT_PUNCT ; NOT (space | control | digit | alpha)
and #CT_NOT_PUNCT ; Mask relevant bits
rts
@L1: lda #$00 ; Return false
tax
rts