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Re: strtod ("nan") returns negative NaN

From: Corinna Vinschen <vinschen at redhat dot com>
To: Masamichi Hosoda <trueroad at trueroad dot jp>
Cc: newlib at sourceware dot org
Date: Tue, 14 Aug 2018 18:01:13 +0200
Subject: Re: strtod ("nan") returns negative NaN
References: <20180814.134527.917341694729989717.trueroad@trueroad.jp> <20180814_dot_134527_dot_917341694729989717_dot_trueroad_at_trueroad_dot_jp> <20180814095618.GT3747@calimero.vinschen.de> <20180815.000539.1012490218433540835.trueroad@trueroad.jp>
Reply-to: newlib at sourceware dot org

On Aug 15 00:05, Masamichi Hosoda wrote:
> Hi
> 
> I've found that strtod ("nan") returns negative NaN on Cygwin 64 bit.
> https://cygwin.com/ml/cygwin/2018-08/msg00168.html
> 
> On Linux with glibc, both strtod ("nan")
> and strtod ("-nan") return positive NaN.
> 
> So I've created the patch that behaves like glibc.
> Both strtod ("nan") and strtod ("-nan") return positive NaN.

Looks good on Cygwin.  Any comments from non-Cygwin devs?
If nobody has a problem I push the patch in the next days.


Thanks,
Corinna

-- 
Corinna Vinschen
Cygwin Maintainer
Red Hat

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References:
- strtod ("nan") returns negative NaN
  - From: Masamichi Hosoda

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