; ispunct.s
;
; This file is part of
; cc65 - a freeware C compiler for 6502 based systems
;
; https://github.com/cc65/cc65
;
; See "LICENSE" file for legal information.
;
; int ispunct (int c);
;

        .export         _ispunct
        .include        "ctype.inc"
        .import         ctype_preprocessor        

_ispunct:
        jsr     ctype_preprocessor      ; (clears always x)
        bcs     @L1                     ; out of range? (everything already clear -> false)
        and     #CT_NOT_PUNCT           ; mask relevant bits
        cmp     #1                      ; if false, then set "borrow" flag
        lda     #0
        sbc     #0                      ; invert logic (return NOT (space | control | digit | alpha))
@L1:    rts