Installing external libary help

Projects General Guidance
1

I am completely new (Arduino UNO for one day) and I think I understand the basics.
I understand how to install a standard library from sketch/import library
(I am using a Apple Mac)

I want to use acos asin atan2 and so need to use an external library.
I found this one:
http://www.arduino.cc/en/Math/H

But I cant seem to install it into the sketch/import menu list.
when I download the library I expected to find a folder with a .cpp file and a .h file - but cant see it anywhere.
I may doing doing something very basically wrong - or perhaps it is a file that needs windows (I am on a MAc) to unzip somewhere.
Advice to get me started really appreciated.
or advice on another way to uses atan2 asin etc
Many thanks and best wishes
Andrew

2

I think math.h is included automatically, if you need it.

3

Yes, the math library is a standard part of the compiler. You should only have to add the line:

#include <math.h>
4

Do you even need to do that? I compiled a quick sketch containing asin() and acos() without #including math.h. It complained when I added atan2(), because I got the parameters wrong.

5

dxw00d:
Do you even need to do that?

Looks like Arduino.h does it for you so you don't have to:

#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <avr/pgmspace.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include "binary.h"
6

Many thanks all - I think I am there now - really grateful for your help getting me started.

ANdrew