Acos

Acos  // Elementwise acos operation

Description

Produces a tensor of the same element type and shape as arg, where the value at each coordinate of output is the inverse cosine of the value at the corresponding coordinate of arg.

Inputs

Name Element Type Shape
arg Any Any

Outputs

Name Element Type Shape
output Same as arg Same as arg

Mathematical Definition

\[\mathtt{output}_{i_0, \ldots, i_{n-1}} = \cos^{-1}(\mathtt{arg}_{i_0, \ldots, i_{n-1}})\]

Backprop

\[\overline{\mathtt{arg}} \leftarrow -\frac{\Delta}{\sqrt{1-\mathtt{arg}^2}}\]

C++ Interface

class Acos : public ngraph::op::util::UnaryElementwiseArithmetic

Elementwise inverse cosine (arccos) operation.

Public Functions

const NodeTypeInfo &get_type_info() const

Returns the NodeTypeInfo for the node’s class. During transition to type_info, returns a dummy type_info for Node if the class has not been updated yet.

Acos()

Constructs an arccos operation.

Acos(const Output<Node> &arg)

Constructs an arccos operation.

Output [d1, ...]

Parameters
  • arg: Output that produces the input tensor.[d1, ...]