PI Constant Pi

Section: Base Constants

Usage

Returns a double (64-bit floating point number) value that represents pi (ratio between the circumference and diameter of a circle...). Typical usage 
   y = pi

This value is approximately 3.141592653589793.

Example

The following example demonstrates the use of the pi function. 
--> pi

ans = 
    3.1416 

--> cos(pi)

ans = 
 -1