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Re: strtod ("nan") returns negative NaN

On Aug 14 13:45, Masamichi Hosoda wrote:
> >From a50ee5a4747a99c70469a53fe959f3dc22d3b79a Mon Sep 17 00:00:00 2001
> From: Masamichi Hosoda <>
> Date: Tue, 14 Aug 2018 12:50:32 +0900
> Subject: [PATCH] Fix strtod ("nan") returns qNaN
> The definition of qNaN for x86_64 and x86 was wrong.
> So strtod ("nan") returned sNaN instead of qNaN.
> Furthermore, it was inverted the sign bit with the presence of `-` character.
> So strtod ("-nan") returned qNaN.
> This commit fixes definition of qNaN
> and removes the sign bit inversion when evaluating "nan".
> ---
>  newlib/libc/stdlib/gd_qnan.h | 8 ++++----
>  newlib/libc/stdlib/strtod.c  | 1 +
>  2 files changed, 5 insertions(+), 4 deletions(-)

Can you please send this patch to the newlib AT sourceware DOT org
mailing list?  As soon as something in newlib gets changed, a lot of
other targets are affected and the guys working on those targets should
have a chance to chime in.


Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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