fix(catalan): Replace subtrahend with arg

1 files changed, 3 insertions, 4 deletions

diff --git a/catalan/math.a65 b/catalan/math.a65
index 7bd850a..667d651 100644
--- a/catalan/math.a65
+++ b/catalan/math.a65
@@ -41,18 +41,17 @@ diva .(
 	ora #0		; Update flags, so they're accurate with the accumulator value
 	beq return	; if (a == 0) return a
 
-	ldx arg	; x = arg
+	ldx arg		; x = arg
 	cpx #0		; if (x == 0)
 	beq r_zero	;   return 0
 	cpx #1		; if (x == 1)
 	beq return	;   return a
 
-	stx subtrahend	; subtrahend = x
 	ldx #0		; x = 0
 loop	sec		; do  carry = 1
-	sbc subtrahend	;     a -= addend + !carry
+	sbc arg		;     a -= arg + !carry
 	inx		;     ++x
-	cmp subtrahend	; while (a >= subtrahend)
+	cmp arg		; while (a >= arg)
 	bcs loop
 
 return	txa