Method copy

src/com/winvector/opt/def/LinUtil.java:6–13

(final double[] x)

public class LinUtil {
	public static double[] copy(final double[] x) {
		final int dim = x.length;
		final double[] r = new double[dim];
		for(int i=0;i<dim;++i) {
			r[i] = x[i];
		}
		return r;
	}
	
	public static double dot(final double[] a, final double[] b) {
		final int dim = a.length;