Where are the math functions in FC4?

External Since: Jun 26, 2006 Posts: 10

I created a very simple c program using sqrt(), and used the math.h include
file. When I compile using gcc I get an "undefined reference to sqrt"
message. Other math functions such as sin or cos also do not work. It looks
like the function definitions are missing. Any help would be appreciated.

Shel Sherman

External Since: Oct 02, 2003 Posts: 263

Shel wrote:

> I created a very simple c program using sqrt(), and used the math.h
> include file. When I compile using gcc I get an "undefined reference
> to sqrt" message.

You must link your program with the math library. Add "-lm" on the GCC
command line.

--
Markku Kolkka
markku.kolkka.TakeThisOut@iki.fi