title: tf.round() to a specified precision
body: <p><a href="https://www.tensorflow.org/api_docs/python/tf/round" rel="noreferrer"><code>tf.round(x)</code></a> rounds the values of <code>x</code> to integer values. </p>
  
  <p>Is there any way to round to, say, 3 decimal places instead?</p>