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Re: weird optimization in sin+cos, x86 backend

On 2012-02-14 09:51:28 +0000, Andrew Haley wrote:
> On 02/13/2012 08:00 PM, Geert Bosch wrote:
> > GNU Linux is quite good, but has issues with the "pow" function for
> > large exponents, even in current versions
> 
> Really?  Even on 64-bit?  I know this is a problem for the 32-bit
> legacy architecture, but I thought the 64-bit pow() was OK.

According to http://sourceware.org/bugzilla/show_bug.cgi?id=706
the 32-bit pow() can be completely wrong, and the 64-bit pow()
is just very inaccurate.

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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
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