def ripple(data):
 return (((data[0] - 3) * (data[1] - 3)) + (2 * sin(((data[0] - 4) * (data[1] - 4)))))

def ripple ( data ) : return ( ( ( data [ 0 ] - 3 ) * ( data [ 1 ] - 3 ) ) + ( 2 * sin ( ( ( data [ 0 ] - 4 ) * ( data [ 1 ] - 4 ) ) ) ) )
ripple benchmark function .