math-functions: floor, sin, cos, atan, sqrt

[Robert Brusa]

Hi
I have written a program that uses the above mentioned math-functions.
At the very top of my source there is the statement:

> #include <stdio.h>
> #include <math.h>

However, I get errors each time I try to call one of these functions.
This triggers two questions?

1) What do I have to import to get these functions in?

2) Where is this type of stuff documented?

Thank you and best regards
Bob

-- 
Bob Brusa
BRUSAG Sensorik &
messtechn. Entwicklungen
Chapfwiesenstr. 14
CH-8712 Staefa (Switzerland)
bob.brusa at gmail.com
+41 44 926 74 74
www.brusag.ch