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

al_fixed\ al_fixsin(al_fixed\ x);
\f[]
.fi
.SH DESCRIPTION
.PP
This function finds the sine of a value using a lookup table.
The input value must be a fixed point binary angle.
.PP
Example:
.IP
.nf
\f[C]
\ \ \ \ al_fixed\ angle;
\ \ \ \ int\ result;

\ \ \ \ /*\ Set\ the\ binary\ angle\ to\ 90\ degrees.\ */
\ \ \ \ angle\ =\ al_itofix(64);

\ \ \ \ /*\ The\ sine\ of\ 90\ degrees\ is\ one.\ */
\ \ \ \ result\ =\ al_fixtoi(al_fixsin(angle));
\ \ \ \ assert(result\ ==\ 1);
\f[]
.fi
.SH RETURN VALUE
.PP
Returns the sine of a fixed point binary format angle.
The return value will be in radians.