public static final float length(final float[] v) {
        float s = 0;
        for (float vv : v) {
            s += vv * vv;
        }
        return (float) Math.sqrt(s);
    }
A private constructor to inhibit instantiation of this class.
jme3-terrain/src/main/java/com/jme3/terrain/noise/ShaderUtils.java