tf.sign

tf.sign(
    x,
    name=None
)

Defined in tensorflow/python/ops/math_ops.py.

See the guide: Math > Basic Math Functions

Returns an element-wise indication of the sign of a number.

y = sign(x) = -1 if x < 0; 0 if x == 0 or tf.is_nan(x); 1 if x > 0.

Zero is returned for NaN inputs.

For complex numbers, y = sign(x) = x / |x| if x != 0, otherwise y = 0.

Args:

• x: A Tensor or SparseTensor. Must be one of the following types: half, float32, float64, int32, int64, complex64, complex128.
• name: A name for the operation (optional).

Returns:

A Tensor or SparseTensor, respectively. Has the same type as x.

Numpy Compatibility

Equivalent to numpy.sign except for the behavior for input values of NaN.