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Re: Fix hypotf overflow/underflow (bug 13840)

From: David Miller <davem@davemloft.net>
Date: Tue, 13 Mar 2012 17:36:40 -0700 (PDT)

> From: David Miller <davem@davemloft.net>
> Date: Tue, 13 Mar 2012 15:43:25 -0700 (PDT)
> 
>> By using a cast to double all the scaling code can be removed, and all
>> that's left are the checks against 0x7f800000 and zero.
> 
> Something like this.  It passes all the existing math tests at
> least on sparc.  I'll try with the new tests from your patch
> Joseph.

Joseph, it passes your new tests as well.

So, feel free to check in my version if you want.
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