code: @Override
  	public RandomVariable floor(double floor) {
  		return apply(new DoubleUnaryOperator() {
  			@Override
  			public double applyAsDouble(double x) {
  				return Math.max(x, floor);
  			}
  		});
  	}
docs: /* (non-Javadoc)
  @see net.finmath.stochastic.RandomVariable#floor(double)