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al_fixtan(3)		    Library Functions Manual		    al_fixtan(3)

NAME
     al_fixtan - Allegro 5 API

SYNOPSIS
	    #include <allegro5/allegro.h>

	    al_fixed al_fixtan(al_fixed x);

DESCRIPTION
     This function finds the tangent of a value using a lookup table.  The input
     value must be a fixed point binary angle.

     Example:

	    al_fixed angle, res_a, res_b;
	    float dif;

	    angle = al_itofix(37);
	    /* Prove that tan(angle) == sin(angle) / cos(angle). */
	    res_a = al_fixdiv(al_fixsin(angle), al_fixcos(angle));
	    res_b = al_fixtan(angle);
	    dif = al_fixtof(al_fixsub(res_a, res_b));
	    printf("Precision error: %f\n", dif);

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

Allegro reference manual					    al_fixtan(3)

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