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uz
2000-05-28 13:40:48 +00:00
parent 579491e8a4
commit 53dd513176
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libsrc/runtime/div.s
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;
; Ullrich von Bassewitz, 07.08.1998
;
; CC65 runtime: division for signed ints
;
; When negating values, we will ignore the possibility here, that one of the
; values if $8000, in which case the negate will fail.
.export tosdiva0, tosdivax
.import popsargs, udiv16, adjsres
.importzp sreg
tosdiva0:
ldx #0
tosdivax:
jsr popsargs ; Get arguments from stack, adjust sign
jsr udiv16 ; Do the division
lda sreg ; Result is in sreg, remainder in ptr1
ldx sreg+1
jmp adjsres ; Adjust the sign of the result if needed