Date: Sat, 6 Feb 1999 19:57:04 -0500 From: Chris Johnson <cjohnson@palomine.net> To: Keith Anderson <keith@apcs.com.au> Cc: questions@FreeBSD.ORG Subject: Re: math.h ? Message-ID: <19990206195704.A23866@palomine.net> In-Reply-To: <XFMail.990207113238.keith@apcs.com.au>; from Keith Anderson on Sun, Feb 07, 1999 at 11:32:38AM %2B1100 References: <XFMail.990207113238.keith@apcs.com.au>
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On Sun, Feb 07, 1999 at 11:32:38AM +1100, Keith Anderson wrote:
> HI All,
>
> Below I have a very simple 'c' program but I can't make it work !! What am I
> doing wrong, it will not compile?
>
> Any help would be great
>
> Thanks
>
> Keith
>
> <snip test.c>
> #include <math.h>
>
> main ()
> {
> double x = 64;
> double ans;
> ans = sqrt(x);
>
> printf("ans = %lf\n",ans);
>
> }
>
> </snip test.c>
>
> keith@wis~>cc test.c
> /var/tmp/ccV145121.o: Undefined symbol `_sqrt' referenced from text segment
You've got to link it with libm, like so:
cc -lm test.c
Chris
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