fixsin(3)
NAME
fixsin – Fixed point sine of binary angles. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
fixed fixsin(fixed x);
DESCRIPTION
This function finds the sine of a value using a lookup table. The input value must be a fixed point binary angle. Example:
fixed angle;
int result;
/* Set the binary angle to 90 degrees. /
angle = itofix(64);
/ The sine of 90 degrees is one. */
result = fixtoi(fixsin(angle));
ASSERT(result == 1);
RETURN VALUE
Returns the sine of a fixed point binary format angle. The return value will be in radians.
SEE ALSO
, ex12bit(3), ex3buf(3), exblend(3), excustom(3), exspline(3), exupdate(3)