[Bug: atof() can't parse "NaN"]

[jjohnstn]

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
> 
>