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paddle.fluid / layers / sign
sign¶
此OP对输入x中每个元素进行正负判断，并且输出正负判断值：1代表正，-1代表负，0代表零。
- 参数：
-
x (Variable|numpy.ndarray) – 进行正负值判断的多维Tensor或者是多维的numpy数组，数据类型为 float32，float64。
返回：输出正负号Tensor，数据的shape大小和输入x的数据shape一致。
返回类型：Variable，数据类型和输入数据类型一致。
代码示例
import paddle.fluid as fluid
import numpy as np
data = fluid.layers.sign(np.array([3.0, 0.0, -2.0], dtype='float32'))
# data=[1.0, 0.0, -1.0]
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