On Apr 29, 2009, at 7:56 AM, M. Adam Davis wrote:

> Slightly faster (since a one bit shift takes a full instruction  
> cycle):
> temp = input;
> temp = temp >> 7;
> result += temp;
> temp = temp >> 6; // temp = input >> 13
> result += temp;
> temp = temp >> 1;  // temp = input >> 14
> result += temp;
> temp = temp >> 4; // temp = input >> 18
> result += temp;

This is especially interesting, because after all the original "ticks"  
input BEFORE the multiply is already "input>>7"  (it becomes a  
multiply by "128/125", which is just fine...)

BillW

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