# tensorflow::ops::Sum Class Reference

# tensorflow::ops::Sum

`#include <math_ops.h>`

Computes the sum of elements across dimensions of a tensor.

## Summary

Reduces `input` along the dimensions given in `axis`. Unless `keep_dims` is true, the rank of the tensor is reduced by 1 for each entry in `axis`. If `keep_dims` is true, the reduced dimensions are retained with length 1.

Arguments:

- scope: A [Scope](https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object
- input: The tensor to reduce.
- axis: The dimensions to reduce. Must be in the range `[-rank(input), rank(input))`.

<br />

Optional attributes (see `https://www.tensorflow.org/versions/r2.3/api_docs/cc/struct/tensorflow/ops/sum/attrs#structtensorflow_1_1ops_1_1_sum_1_1_attrs`):

- keep_dims: If true, retain reduced dimensions with length 1.

<br />

Returns:

- `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output`: The reduced tensor.

<br />

Aliases:

- ReduceSum

<br />

| ### Constructors and Destructors ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/sum#classtensorflow_1_1ops_1_1_sum_1a341324ed38971337938f58c4dd0266d5(const ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input input, ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input axis)` ||
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/sum#classtensorflow_1_1ops_1_1_sum_1a4eda74597ef4aa27ffc9e46faa44784a(const ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input input, ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input axis, const https://www.tensorflow.org/versions/r2.3/api_docs/cc/struct/tensorflow/ops/sum/attrs#structtensorflow_1_1ops_1_1_sum_1_1_attrs & attrs)` ||

| ### Public attributes ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/sum#classtensorflow_1_1ops_1_1_sum_1a8c15531c7f77d5644e4fc462aa71b50d` | `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation` |
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/sum#classtensorflow_1_1ops_1_1_sum_1aadcd98e136a98408ff471057a1470e21` | `::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` |

| ### Public functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/sum#classtensorflow_1_1ops_1_1_sum_1a1f8bb7a4a82b5cdab23f43564703dc08() const ` | `::tensorflow::Node *` |
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/sum#classtensorflow_1_1ops_1_1_sum_1af520ee8ec9e5caf488ebb719a26a91e8() const ` | ` `` ` |
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/sum#classtensorflow_1_1ops_1_1_sum_1a85412c1763adffff3c4f0d0fe7a8e433() const ` | ` `` ` |

| ### Public static functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/sum#classtensorflow_1_1ops_1_1_sum_1a3ed061476e46b79f5e6ec8bdd28dd3e0(bool x)` | `https://www.tensorflow.org/versions/r2.3/api_docs/cc/struct/tensorflow/ops/sum/attrs#structtensorflow_1_1ops_1_1_sum_1_1_attrs` |

| ### Structs ||
|---|---|
| [tensorflow::ops::Sum::Attrs](https://www.tensorflow.org/versions/r2.3/api_docs/cc/struct/tensorflow/ops/sum/attrs) | Optional attribute setters for [Sum](https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/sum#classtensorflow_1_1ops_1_1_sum). |

## Public attributes

### operation

```
Operation operation
```

### output

```
::tensorflow::Output output
```

## Public functions

### Sum

```
 Sum(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input input,
  ::tensorflow::Input axis
)
```

### Sum

```
 Sum(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input input,
  ::tensorflow::Input axis,
  const Sum::Attrs & attrs
)
```

### node

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

### operator::tensorflow::Input

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

### operator::tensorflow::Output

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

## Public static functions

### KeepDims

```
Attrs KeepDims(
  bool x
)
```