final double d = x.dotProduct(x); if (d > 0 && d != 1.0) x.multiplyInplace(1.0 / Math.sqrt(d));
final double d = x.dotProduct(x); if (d > 0 && d != 1.0) x.multiplyInplace(1.0 / Math.sqrt(d));
final double d = x.dotProduct(x); if (d > 0 && d != 1.0) x.multiplyInplace(1.0 / Math.sqrt(d));
final double d = x.dotProduct(x); if (d > 0 && d != 1.0) x.multiplyInplace(1.0 / Math.sqrt(d));