History of tri

== Syntax ==

:int tri (int a)

== Arguments ==

:a

::Normally a value between 0 and 1024, but it can also be higher

== Return ==

:A value between -511 and 512 is returned.

== Description ==

:tri works like sin(), but returns a triangular/linear value. Has the same effect as tricos(a-256).

== Example ==

== Also see ==

:(sin)?,tricos

== Comments ==

:Everyone can add his comments about his experiences with this function here. Tips for using it are welcome, too.