}
  }];
}

def TF_SignOp : TF_Op<"Sign", [Pure, TF_Idempotent, TF_SameOperandsAndResultTypeResolveRef]> {
  let summary = "Returns an element-wise indication of the sign of a number.";

  let description = [{
`y = sign(x) = -1` if `x < 0`; 0 if `x == 0`; 1 if `x > 0`.

For complex numbers, `y = sign(x) = x / |x|` if `x != 0`, otherwise `y = 0`.

Example usage:

## Major Features and Improvements

*   `tf.lite`:

    *   New operations supported:
          * tf.unsortedsegmentmin op is supported.
          * tf.atan2 op is supported.
          * tf.sign op is supported.
    *   Updates to existing operations:
          * tfl.mul now supports complex32 inputs.

*   `tf.experimental.StructuredTensor`