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.TH "al_fixsin" "3alleg5" "" "Allegro reference manual" ""
.hy
.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[R]
.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[R]
.fi
.SH RETURN VALUE
.PP
Returns the sine of a fixed point binary format angle as a fixed point
value.