[Ffmpeg-devel] ac3enc.c modifications

Mike Melanson mike
Fri May 20 02:15:08 CEST 2005

Rich Felker wrote:
> Yes it is. Performing an operation on an integer is inherently less
> work than performing the same operation on a floating point number,
> since you have the added exponent to deal with. If you make a cpu
> where the floating point op is just as fast or faster, it means you
> misdesigned your integer unit horribly, since a simplified version of
> the floating point unit should be able to do the analogous integer
> operation in less time.

	I didn't realize math majors had to take so many electrical & computer 
engineering courses.

	How about this scenario: Both the floating point op and integer op take 
the same amount of time, say, 1 clock cycle. Where is the advantage for 
integer in this case? Especially since the code probably has to do a few 
more maintenance operations on the integer after the operation 
(precision scaling, whatever).

	-Mike Melanson

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