tf.math.scalar_mul

Multiplies a scalar times a Tensor or IndexedSlices object.

View aliases

Main aliases

tf.scalar_mul

tf.math.scalar_mul(
    scalar, x, name=None
)

This is a special case of tf.math.multiply, where the first value must be a scalar. Unlike the general form of tf.math.multiply, this is operation is guaranteed to be efficient for tf.IndexedSlices.

x = tf.reshape(tf.range(30, dtype=tf.float32), [10, 3])
with tf.GradientTape() as g:
  g.watch(x)
  y = tf.gather(x, [1, 2])  # IndexedSlices
  z = tf.math.scalar_mul(10.0, y)

Args
scalar	A 0-D scalar Tensor. Must have known shape.
x	A Tensor or IndexedSlices to be scaled.
name	A name for the operation (optional).

Returns
scalar * x of the same type (Tensor or IndexedSlices) as x.

Raises
ValueError	if scalar is not a 0-D scalar.