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Date: Wed, 2 May 2007 10:22:03 -0700 (PDT)
From: "Cary R." <cygcary AT yahoo DOT com>
Subject: Re: newlib?: pow function can produce incorrect results.
To: cygwin AT cygwin DOT com
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One thing to keep in mind is that I was encouraged to submit patches to
make the newlib functions match the glibc implementation not the standard.
Which I don't currently have access to.
 
> Other potentially controversial special cases (may or may not be
> handled correctly by newlib -- I didn't check) are:
> atan2(+-0,-0)=+-pi
> atan2(+-0,+0)=+-0

newlib and my version of glibc return +0 for all these cases.

> hypot(+-inf,y)=+inf, even for y=NaN
> fmax(x,NaN)=fmax(NaN,x)=fmin(x,NaN)=fmin(NaN,x)=x

newlib gets these right.

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