Ronaldo, you can use either assembly or 'C'. If you use 'C' then the problem is very easy since the C compiler will do all the work for you.

If you do it in assembly, read the tutorials (see left sidebar). Also, check out the code library (also on left sidebar) which includes a number of math libraries that have been contributed by others.

It's always worthwhile to do a little research before asking everyone for help. The answer to your questions can be found on this website.

Craig Steiner