sign¶

paddle. sign ( x, name=None ) [source]

This OP returns sign of every element in x: 1 for positive, -1 for negative and 0 for zero.

Parameters

• x (Tensor) – The input tensor. The data type can be float16, float32 or float64.

• name (str, optional) – The default value is None. Normally there is no need for user to set this property. For more information, please refer to Name

Returns

The output sign tensor with identical shape and data type to the input x.

Return type

Tensor

Examples

import paddle

x = paddle.to_tensor([3.0, 0.0, -2.0, 1.7], dtype='float32')
out = paddle.sign(x=x)
print(out)  # [1.0, 0.0, -1.0, 1.0]