LZ: Fractions

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LZ: Fractions

The easiest way to divide by five is to first multiply the number by 2 and then divide by 10.  An example is below.


Assuming A is the number to divide by 5


Start:
	ld	l,a	
	ld	h,0
	sla	l	
	rl	h	;multiply A by two and place in HL


	ROM_CALL(UNPACK_HL)	;divides HL by 10 and stores decimal to A
	
	;HL contains number divided by 5 and A contains the decimal part of number in HL
End:


That's all there is to it.  I just found out how to do that today when I had to write a routine to convert Celcius degrees to Farenheit.


Ed Plese, Jr.
(eplese@lnd.com)