# DML_ELEMENT_WISE_ATAN_YX_OPERATOR_DESC structure (directml.h)

Computes the 2-argument arctangent for each element of *ATensor* and *BTensor*, where *ATensor* is the *Y-axis* and *BTensor* is the *X-axis*, placing the result into the corresponding element of *OutputTensor*. This operator is undefined for the origin (that is, when *ATensor* and *BTensor* are both 0 for corresponding elements).

```
f(y, x) = atan2(y, x)
```

This operator supports in-place execution, meaning that the output tensor is permitted to alias *ATensor* or *BTensor* during binding.

Important

This API is available as part of the DirectML standalone redistributable package (see Microsoft.AI.DirectML version 1.5 and later. Also see DirectML version history.

## Syntax

```
struct DML_ELEMENT_WISE_ATAN_YX_OPERATOR_DESC {
const DML_TENSOR_DESC *ATensor;
const DML_TENSOR_DESC *BTensor;
const DML_TENSOR_DESC *OutputTensor;
};
```

## Members

`ATensor`

Type: **const DML_TENSOR_DESC***

The input tensor to read the Y-axis values from.

`BTensor`

Type: **const DML_TENSOR_DESC***

The input tensor to read the X-axis values from.

`OutputTensor`

Type: **const DML_TENSOR_DESC***

The output tensor to write the results to.

## Remarks

## Availability

This operator was introduced in `DML_FEATURE_LEVEL_3_1`

.

## Tensor constraints

*ATensor*, *BTensor*, and *OutputTensor* must have the same *DataType*, *DimensionCount*, and *Sizes*.

## Tensor support

Tensor | Kind | Supported dimension counts | Supported data types |
---|---|---|---|

ATensor | Input | 1 to 8 | FLOAT32, FLOAT16 |

BTensor | Input | 1 to 8 | FLOAT32, FLOAT16 |

OutputTensor | Output | 1 to 8 | FLOAT32, FLOAT16 |

## Requirements

Header |
directml.h |