File: Scaler.proto

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// Copyright (c) 2017, Apple Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-3-clause license that can be
// found in LICENSE.txt or at https://opensource.org/licenses/BSD-3-Clause

syntax = "proto3";
option optimize_for = LITE_RUNTIME;

package CoreML.Specification;

/*
 * A scaling operation.
 *
 * This function has the following formula:
 *
 * .. math::
 *     f(x) = scaleValue \cdot (x + shiftValue)
 *
 * If the ``scaleValue`` is not given, the default value 1 is used.
 * If the ``shiftValue`` is not given, the default value 0 is used.
 *
 * If ``scaleValue`` and ``shiftValue`` are each a single value
 * and the input is an array, then the scale and shift are applied
 * to each element of the array.
 *
 * If the input is an integer, then it is converted to a double to
 * perform the scaling operation. If the output type is an integer,
 * then it is cast to an integer. If that cast is lossy, then an
 * error is generated.
 */
message Scaler {
  repeated double shiftValue = 1;
  repeated double scaleValue = 2;
}