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To: Larry Rosenman <ler@lerctr.org>
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Date: Thu, 13 May 2004 22:23:31 -0400
From: Stephan Uphoff <ups@tree.com>
cc: freebsd-current@freebsd.org
Subject: Re: strtod vs NAN? 
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Try:
   char *ptr;
and
   num=strtod(input,&ptr);
	
 
Larry Rosenman wrote:
> 
> Isn't strtod supposed to deal with NAN's?
> 
> I ran:
> 
> $ cat test3.c
> #include <stdlib.h>
> #include <stdio.h>
> #include <errno.h>
> int main(int argc,char **argv)
> {
>   double num;
>   char *input=3D"NAN";
>   char *border1=3D"/////////////////////////////";
>   char *input2=3D"inf";
>   char *border2=3D"/////////////////////////////";
>   char **ptr;
> 
>   num=3Dstrtod(input,ptr);
>   printf("num=3D%g\n",num);
>   printf("errno=3D%ld\n",errno);
>   printf("ptr=3D%p, points to %s\n",*ptr,*ptr);
>   num=3Dstrtod(input2,ptr);
>   printf("num=3D%g\n",num);
>   printf("errno=3D%ld\n",errno);
>   printf("ptr=3D%p, points to %s\n",*ptr,*ptr);
>   exit(0);
> }
> $
> 
> and I get a SIGSEGV in the first strtod call.
> 
> the manpage for strtod implies, to me, that it should deal with it.
> 
> Thanks!
> 
> This is with -CURRENT as of:
> 
> $ uname -a
> FreeBSD lerlaptop.lerctr.org 5.2-CURRENT FreeBSD 5.2-CURRENT #111: Sat May=20
> 1 23:09:13 CDT 2004=20
> ler@lerlaptop.lerctr.org:/usr/obj/usr/src/sys/LERLAPTOP  i386
> $
> --=20
> Larry Rosenman                     http://www.lerctr.org/~ler
> Phone: +1 972-414-9812                 E-Mail: ler@lerctr.org
> US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749
>