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cc65/libsrc/runtime/umod.s
2022-04-17 16:06:22 +02:00

29 lines
524 B
ArmAsm

;
; Ullrich von Bassewitz, 07.08.1998
;
; CC65 runtime: modulo operation for unsigned ints
;
.export tosumoda0, tosumodax
.import popptr1, udiv16
.importzp sreg, ptr4
tosumoda0:
ldx #0
tosumodax:
sta ptr4
stx ptr4+1 ; Save right operand
jsr popptr1 ; Get right operand
; Do the division
jsr udiv16
; Result is in ptr1, remainder in sreg
lda sreg
ldx sreg+1
rts