def func(self, input_tensor: Tensor) -> Tensor:
copy_tensor = input_tensor.copy()
copy_tensor[copy_tensor <= 0] = 0
return copy_tensor
def grad(self, input_tensor: Tensor) -> Tensor:
copy_tensor = input_tensor.copy()
copy_tensor[copy_tensor <= 0] = 0
copy_tensor[copy_tensor > 0] = 1
return copy_tensor
def grad(X: Tensor) -> Tensor:
copy_X = X.copy()
copy_X[copy_X < 0] = 0
copy_X[copy_X != 0] = 1
return copy_X
