.\" Automatically generated by Pandoc 3.1.12.1
.\"
.TH "al_fixtan" "3" "" "Allegro reference manual" ""
.SH NAME
al_fixtan \- Allegro 5 API
.SH SYNOPSIS
.IP
.EX
#include \f[B]<allegro5/allegro.h>\f[R]

al_fixed al_fixtan(al_fixed x);
.EE
.SH DESCRIPTION
This function finds the tangent of a value using a lookup table.
The input value must be a fixed point binary angle.
.PP
Example:
.IP
.EX
al_fixed angle, res_a, res_b;
float dif;

angle = al_itofix(37);
\f[I]/* Prove that tan(angle) == sin(angle) / cos(angle). */\f[R]
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(\[dq]Precision error: %f\[rs]n\[dq], dif);
.EE
.SH RETURN VALUE
Returns the tangent of a fixed point binary format angle as a fixed
point value.