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Re: [Bug: atof() can't parse "NaN"]
- From: jjohnstn <jjohnstn at redhat dot com>
- To: Christopher Faylor <cgf at alumni dot unh dot edu>
- Cc: newlib at sourceware dot org, Christopher Faylor <me at cgf dot cx>
- Date: Thu, 6 Jan 2005 18:35:45 -0500 (EST)
- Subject: Re: [Bug: atof() can't parse "NaN"]
I have just checked in a change.
-- Jeff J.
On Thu, 6 Jan 2005, jjohnstn wrote:
> The newlib strtod and subsequently atof implementation currently does
> not support NANs. I am working presently on an enhancement. It is
> mostly working, however, I need to tweak vfscanf and a few unit tests
> are not matching glibc behavior.
>
> I should have something by end of day or tomorrow.
>
> -- Jeff J.
>
> On Thu, 6 Jan 2005, Christopher Faylor wrote:
>
> > ----- Forwarded message from Roger Leigh <roger.leigh@epictechnology.co.uk> -----
> >
> > From: Roger Leigh
> > Subject: Bug: atof() can't parse "NaN"
> > Date: Thu, 6 Jan 2005 16:07:11 +0000
> >
> > Hi folks,
> >
> > While fixing up glib-2.6.0 to build, I found a failure in the
> > floating-point tests. This is seemingly because atof() is bust.
> > This is a trivial example:
> >
> >
> > /* for NAN and INFINITY */
> > #define _ISOC99_SOURCE
> >
> > #include <assert.h>
> > #include <string.h>
> > #include <stdlib.h>
> > #include <math.h>
> > #include <ieeefp.h>
> >
> > int
> > main ()
> > {
> > double our_nan;
> >
> > #ifdef NAN
> > our_nan = NAN;
> > #else
> > /* Do this before any call to setlocale. */
> > our_nan = atof ("NaN");
> > #endif
> > assert (isnan (our_nan));
> >
> > return 0;
> > }
> >
> >
> > When I run this (current net release) the assert fails, and it
> > segfaults.
> >
> >
> > Regards,
> > Roger
> >
> >
>
>