Version:

Last Modified: January 9, 2018

Computes the arctangent of one value divided by another value (**y**/**x**). The arctangent is in pi radians, which use fewer FPGA resources than radians. To convert this value into radians, divide the result by pi.

This input supports only scalar values of the fixed-point data type.

x and y Coercion

If you wire fixed-point data types with different configurations to the inputs, this node uses a shared, signed fixed-point data type to represent the value of both inputs internally. The maximum word length of this internal data type is 64 bits. If the configurations of the inputs result in an internal word length greater than 64 bits, this node rounds off the fractional bits of one input to achieve an internal word length of 64 bits, resulting in a loss of precision. This node rounds off the input that has the most fractional bits.

An input to this operation

This input supports only scalar values of the fixed-point data type.

x and y Coercion

Boolean value that describes whether the next data point has arrived for processing. Wire the **output valid** output of an upstream node to this input to transfer data from the upstream node to this node.

True | The next data point has arrived for processing. |

False | The next data point has not arrived for processing. |

Boolean value that specifies whether downstream nodes are ready for this node to return a new value.

Use **Feedback Node** to wire **ready for input** of a downstream node to **ready for output** of the current node. If this input is False during a given cycle, **output valid** returns False during that cycle.

True | The downstream node is ready for the next data point. |

False | The downstream node is not ready for the next data point. |

**Default: **False

Arctangent of **y**/**x** in pi radians, which use fewer FPGA resources than radians. To convert this value into radians, divide **atan2(y,x)** by pi.

Boolean value that indicates whether this node computes a result that downstream nodes can use.

Wire this output to **input valid** of a downstream node to transfer data from the node to the downstream node.

True | Downstream nodes can use the result this node computes. |

False | This node returns an undefined value that downstream nodes cannot use. |

If you wire a fixed-point data type to only **x** or **y**, this node coerces the unwired input to match the configuration of the wired terminal.

**Where This Node Can Run: **

Desktop OS: none

FPGA: All devices

Web Server: Not supported in VIs that run in a web application