Provided by: allegro5-doc_5.0.10-2_all
NAME
al_fixatan - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro.h> al_fixed al_fixatan(al_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: 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.