Hi David.

One exception. X=0 will cause Cy=0 not Cy==1

WBR Dmitry.


"David W. Gulley" wrote:
>
> Dmitriy A. Kiryashov wrote:
>
> > So now what about _tinest_code_ for 2*X - 1 ?
> > (X is byte, the same)
>
> decf     X,W     ; W = x-1
> addwf    X,W     ; W = X + (X-1) = 2*X - 1
>                   ; if X<129, C=0 else C=1
>
> David

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