angle

paddle. angle ( x, name=None ) [源代码] 

逐元素计算复数的相位角。对于非负实数，相位角为 0，而对于负实数，相位角为 \(\pi\)。

\[angle(x) = arctan2(x.imag, x.real)\]

参数

x (Tensor) - 输入的 Tensor，数据类型为：complex64, complex128 或 float32, float64。

name (str，可选) - 具体用法请参见 api_guide_Name，一般无需设置，默认值为 None。

返回

输出实数 Tensor，与 x 的数值精度一致。

代码示例

 >>> import paddle >>> x = paddle.to_tensor([-2, -1, 0, 1]).unsqueeze(-1).astype('float32') >>> y = paddle.to_tensor([-2, -1, 0, 1]).astype('float32') >>> z = x + 1j * y >>> z Tensor(shape=[4, 4], dtype=complex64, place=Place(cpu), stop_gradient=True, [[(-2-2j), (-2-1j), (-2+0j), (-2+1j)],  [(-1-2j), (-1-1j), (-1+0j), (-1+1j)],  [-2j , -1j , 0j , 1j ],  [ (1-2j), (1-1j), (1+0j), (1+1j)]]) >>> theta = paddle.angle(z) >>> theta Tensor(shape=[4, 4], dtype=float32, place=Place(cpu), stop_gradient=True, [[-2.35619450, -2.67794514, 3.14159274, 2.67794514],  [-2.03444386, -2.35619450, 3.14159274, 2.35619450],  [-1.57079637, -1.57079637, 0. , 1.57079637],  [-1.10714877, -0.78539819, 0. , 0.78539819]])  