Dear user,

this package contains 2 files :

     - readme.txt    (you read it right now !)
     - atan.c

atan.c calculates the arctangent of the input values x and y (sometimes called atan2)
by using a CORDIC (COordinate Rotation on a DIgital Computer) algorithm.
It uses a itterative method and only shift, add and substract operations, so its fast
implementation to C with no floating point arithmetics is easy.

Attention ! Although the c-function and the table are written with a few lines, the
compilation results in about 1,7KByte of binary code because of using long ints !

Questions and/or suggestions are welcome.

Regards, Thorsten Godau
         thorsten.godau@gmx.de