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.