[Main]
Name=PI
Type=Constant
Header Files=math.h, timath.h
Definition=#define PI (3.141592653589793)

[Description]
An approximated value of pi.

[Explanation]
PI is a predefined floating point constant which approximates <B>pi</B> up
to 16 significant digits, i.e. <CODE>3.141592653589793</CODE>.
