al_fixed al_fixatan(al_fixed x)
Introduced in 5.0.0

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.


    al_fixed result;

    /* Sets result to binary angle 13. */
    result = al_fixatan(al_ftofix(0.326));

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