On 4/20/06, Olin Lathrop <olin_piclist@embedinc.com> wrote:
>
> YAP wrote:
> > What is 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF (128 bits) in decimal?  How
> > go a head an calculate big numbers like this.
>
> Initialize a sum to 0 and a multiplier to 1.  Start with the right most
> HEX
> digit and multiply it by the multiplier, then add it into the sum.  For
> each
> successive digit to the left, increase the multiplier 16x, multiply the
> digit by it, then add it into the sum.
>
> For example:
>
> Sum = 0, mult = 1, HEX digit = F.  SUM <-- 0 + F*1 = 15
> Sum = 16, mult = 16, HEX digit = F.  SUM <-- 15 + F*16 = 255
> Sum = 255, mult = 256, HEX digit = F.  SUM <-- 255 + F*256 = 4095
> ..
> Keep processing digits in right to left order until all digits exhausted.



Thanks Olin et al. Appreciated.
/Ake
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