code: def dropout_no_scaling(x, keep_prob):
    
    if keep_prob == 1.0:
      return x
    mask = tf.less(tf.random_uniform(tf.shape(x)), keep_prob)
    return x * cast_like(mask, x)
docs: Like tf.nn.dropout, but does not scale up.  Works on integers also.
  
    Args:
      x: a Tensor
      keep_prob: a floating point number
  
    Returns:
      Tensor of the same shape as x.