On Apr 5, 2016, at 5:28 AM, John Francis <[email protected]> wrote:

> Back in the days when it was invented (in 1950), binary multiplication was 
> done
> by shifting and adding.  Shifting was fast, but adding took significantly 
> longer.
[snip]

That was very interesting.  I still use shift operators all the time to 
multiply or divide by powers-of-2, although it's probably no faster these days. 
 Many years ago I read that it was, and the habit has stuck.

Cheers,
Dave


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