# tensorflow::ops::Sign Class Reference

# tensorflow::
ops::
Sign

`
#include <math_ops.h>
`


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

## Summary


`
y = sign(x) = -1
`
if
`
x < 0
`
; 0 if
`
x == 0
`
; 1 if
`
x > 0
`
.


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


Example usage: tf.math.sign(\[0., 2., -3.\])


Args:

- scope: A [Scope](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object

<br />


Returns:

- `
  https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output
  ` : The y tensor.

<br />

| ### Constructors and Destructors ||
|---|---|
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/sign#classtensorflow_1_1ops_1_1_sign_1a869bfb986acd409decd0b81431b64ee1 (const :: https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, :: https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input x) ` ||

| ### Public attributes ||
|---|---|
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/sign#classtensorflow_1_1ops_1_1_sign_1ac2fbb1819b86265978fb432cbfb2815a ` | ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation ` |
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/sign#classtensorflow_1_1ops_1_1_sign_1a2813ef6287e0880c694bb2f4d4630d05 ` | ` :: https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output ` |

| ### Public functions ||
|---|---|
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/sign#classtensorflow_1_1ops_1_1_sign_1a893afd2455d9076ab06676f83c02bea5 () const ` | ` ::tensorflow::Node * ` |
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/sign#classtensorflow_1_1ops_1_1_sign_1a70860555aff56a27fb18552c34265f31 () const ` | ` ` |
| ` https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/sign#classtensorflow_1_1ops_1_1_sign_1a9118daa56e125d739e13c16b3ff96b2d () const ` | ` ` |

## Public attributes

### operation

```
Operation operation
```

### y

```
::tensorflow::Output y
```

## Public functions

### Sign

```
 Sign(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input x
)
```

### node

```
::tensorflow::Node * node() const 
```

### operator::tensorflow::Input

```
 operator::tensorflow::Input() const 
```

### operator::tensorflow::Output

```
 operator::tensorflow::Output() const 
```