padding_value                 ; otherwise.
```
where `d = k[1] - m`, `y = max(-d, 0) - offset`, and `x = max(d, 0) - offset`.

`offset` is zero except when the alignment of the diagonal is to the right.
```
offset = max_diag_len - diag_len(d) ; if (`align` in {RIGHT_LEFT, RIGHT_RIGHT}
                                           and `d >= 0`) or

            not yet been set (via `tf.random.set_seed`). Throws `RuntimeError`
            from Python or `InvalidArgument` from C++
        *   (since v2.7) `tf.compat.v1.nn.fused_batch_norm` backprop to `offset`
            when `is_training=False`
        *   (since v2.7) `tf.image.adjust_contrast` forward
        *   (since v2.7) `tf.image.resize` with `method=ResizeMethod.NEAREST`
            backprop