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.TH "al_fixatan" "3alleg5" "" "Allegro reference manual" ""
.hy
.SH NAME
.PP
al_fixatan - Allegro 5 API
.SH SYNOPSIS
.IP
.nf
\f[C]
#include <allegro5/allegro.h>

al_fixed al_fixatan(al_fixed x)
\f[R]
.fi
.SH DESCRIPTION
.PP
This function finds the inverse tangent of a value using a lookup table.
The input must be a fixed point value.
The inverse tangent is the value whose tangent is \f[V]x\f[R].
.PP
Example:
.IP
.nf
\f[C]
al_fixed result;

/* Sets result to binary angle 13. */
result = al_fixatan(al_ftofix(0.326));
\f[R]
.fi
.SH RETURN VALUE
.PP
Returns the inverse tangent of a fixed point value, measured as a fixed
point binary format angle.