fixatan(3)                      Allegro manual                      fixatan(3)



NAME
       fixatan - Fixed point inverse tangent lookup table. Allegro game
       programming library.

SYNOPSIS
       #include <allegro.h>


       fixed fixatan(fixed x);

DESCRIPTION
       This function finds the inverse tangent of a value using a lookup
       table.  The input value must be a fixed point radian. The inverse
       tangent is the value whose tangent is `x'. Example:

          fixed result;

          /* Sets `result' to binary angle 13. */
          result = fixatan(ftofix(0.326));

RETURN VALUE
       Returns the inverse tangent of a fixed point value, measured as a fixed
       point binary format angle.


SEE ALSO
Allegro                          version 4.2.3                      fixatan(3)
