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Fixed isgraph() and ispunct() (macroes and library functions).

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Greg King
2013-05-01 15:04:36 -04:00
parent 42494c6323
commit b225adaf03
3 changed files with 37 additions and 27 deletions
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libsrc/common/isgraph.s
+9 -6
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@@ -1,5 +1,6 @@
;
; Ullrich von Bassewitz, 02.06.1998
; 1998-06-02, Ullrich von Bassewitz
; 2013-05-01, Greg King
;
; int isgraph (int c);
;
@@ -8,15 +9,17 @@
.include "ctype.inc"
_isgraph:
cpx #$00 ; Char range ok?
cpx #>0 ; Char range OK?
bne @L1 ; Jump if no
tay
lda __ctype,y ; Get character classification
eor #CT_CTRL_SPACE ; NOT control and NOT space
and #CT_CTRL_SPACE ; Mask character bits
rts
and #CT_CTRL_SPACE ; Mask character bits
cmp #1 ; If false, then set "borrow" flag
lda #0
sbc #0 ; Invert logic
rts ; Return NOT control and NOT space
@L1: lda #$00 ; Return false
@L1: lda #<0 ; Return false
tax
rts