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Re: [ft-devel] FT_MulFix assembly


From: Werner LEMBERG
Subject: Re: [ft-devel] FT_MulFix assembly
Date: Sun, 19 Sep 2010 09:44:30 +0200 (CEST)

> Werner:  Miles' version is shorter, is only wrong by one ulp and only
>          when the product overflows and is negative.  My variation,
>          called another() above, fixes that slight difference.
>          Which would you prefer, if anything?

I tend to prefer the faster one $(Q#|(B IIRC, we never rely on product
overflow of 32bit entities.

>          I can write a patch which uses it only when it works (64
>          bit sizeof(long)).

Please do so.


    Werner



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