Function sinc_

python/paddle/tensor/math.py:6698–6723

r""" Inplace version of ``sinc`` API, the output Tensor will be inplaced with input ``x``. Please refer to :ref:`api_paddle_sinc`.

(x: Tensor, name: str | None = None)

@inplace_apis_in_dygraph_only
def sinc_(x: Tensor, name: str | None = None) -> Tensor:
    r"""
    Inplace version of ``sinc`` API, the output Tensor will be inplaced with input ``x``.
    Please refer to :ref:`api_paddle_sinc`.
    """
    if not isinstance(x, (paddle.Tensor, Variable)):
        raise TypeError(f"x must be tensor type, but got {type(x)}")

    check_variable_and_dtype(
        x,
        "x",
        [
            'uint16',
            'float16',
            'float32',
            'float64',
        ],
        "sinc_",
    )

    paddle.where_(x != 0, x, paddle.full_like(x, 1.0e-20))
    paddle.multiply_(x, paddle.to_tensor(math.pi, dtype=x.dtype))
    tmp = paddle.clone(x)
    paddle.sin_(x)
    paddle.divide_(x, tmp)
    return paddle.where(~paddle.isnan(x), x, paddle.full_like(x, 1.0))


@param_two_alias(["x", "elements"], ["test_x", "test_elements"])