atan:
    description: |
        Computes the trigonometric inverse tangent of the input element-wise.

        .. math::

            out_i = \tan^{-1}(input_i)

        Args:
            input (Tensor): The shape of tensor is
                :math:`(N,*)` where :math:`*` means, any number of additional dimensions.
                Supported dtypes: 

                - Ascend: float16, float32.
                - GPU/CPU: float16, float32, float64, complex64 or complex128.

        Returns:
            A Tensor, has the same type as the input.

        Raises:
            TypeError: If `input` is not a Tensor.
            TypeError: If dtype of `input` is not float16, float32, float64, complex64 or complex128.

        Supported Platforms:
            ``Ascend`` ``GPU`` ``CPU``

        Examples:
            >>> import mindspore
            >>> import numpy as np
            >>> from mindspore import Tensor, ops
            >>> input = Tensor(np.array([1.0, 0.0]), mindspore.float32)
            >>> output = ops.atan(input)
            >>> print(output)
            [0.7853982 0.       ]