fnsign_inplace_op→TensorImplPtrint sign_inplace_op(const int & a)sourceeditIn-place sign function: writes sign(x)∈{−1,0,+1}\mathrm{sign}(x) \in \{-1, 0, +1\}sign(x)∈{−1,0,+1} back into a.Math ai←sign(ai)a_i \leftarrow \mathrm{sign}(a_i)ai←sign(ai) See Also sign_op — out-of-place counterpart.ParametersaTensorImplPtrTensor to apply sign to in place. Must be non-null.ReturnsTensorImplPtrThe same pointer as a.