sign¶

dragon.vm.tensorflow.math.sign(
  x,
  name=None
)[source]¶

Compute the sign indication of input.

\[\text{out}_{i} = \begin{cases} -1, & \text{ if } \text{input}_{i} < 0 \\ 0, & \text{ if } \text{input}_{i} = 0 \\ 1, & \text{ if } \text{input}_{i} > 0 \end{cases} \]

Examples:

x = tf.constant([-2, 0, 2])
print(tf.math.sign(x))  # [-1, 0, 1]

Parameters:

• x (dragon.Tensor) – The input tensor.
• name (str, optional) – The operation name.

Returns:

dragon.Tensor – The output tensor.