Variables
	float64 x0 in [-2,2],
	float64 x1 in [-2,2],
	float64 x2 in [-2,2],
	float64 x3 in [-2,2];
	
Expressions
	filter4 rnd32 = ((((0.7 * x3) - (1.3 * x2)) + (1.1 * x1)) + (1.4 * ((((0.7 * x2) - (1.3 * x1)) + (1.1 * x0)) + ((1.4 * (((0.7 * x1) - (1.3 * x0)) + (1.4 * (0.7 * x0)))) - (0.7 * (0.7 * x0)))))) - (0.7 * (((0.7 * x1) - (1.3 * x0)) + (1.4 * (0.7 * x0))));
