[A83] Re: Signed division by a power of two.


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[A83] Re: Signed division by a power of two.



Afaik, sra (alone) preserves the sign.

 

-----Original Message-----
From: assembly-83-bounce@lists.ticalc.org [mailto:assembly-83-bounce@lists.ticalc.org] On Behalf Of Matthew Marshall
Sent: Tuesday, August 12, 2003 2:02 PM
To: Assembly-83@Lists.Ticalc.Org
Subject: [A83] Signed division by a power of two.

 

When dividing a signed number by two, is there any better way than this?

 

bit 7,a

jp z,Positive

scf

rr a

jp EndPositive

Positive:

sra

EndPositive:

 

Or does that way even work?  I have been having a hard time catching onto this idea of signed numbers.

 

Thanks,

MWM


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