Date: Thu, 13 May 2004 22:23:31 -0400 From: Stephan Uphoff <ups@tree.com> To: Larry Rosenman <ler@lerctr.org> Cc: freebsd-current@freebsd.org Subject: Re: strtod vs NAN? Message-ID: <200405140223.i4E2NV9F006242@palm.tree.com> In-Reply-To: Message from Larry Rosenman <ler@lerctr.org> <9AE9B859FD197218F21D81D0@lerlaptop.lerctr.org>
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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
>
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