/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */
import { Tensor, Tensor3D, Tensor4D } from '../tensor';
import { Conv2DInfo } from './conv_util';
export declare type Activation = 'linear' | 'relu' | 'prelu' | 'elu' | 'relu6';
export declare type FusedBatchMatMulConfig = {
    a: Tensor3D;
    b: Tensor3D;
    transposeA: boolean;
    transposeB: boolean;
    bias?: Tensor;
    activation?: Activation;
    preluActivationWeights?: Tensor;
};
export declare type FusedConv2DConfig = {
    input: Tensor4D;
    filter: Tensor4D;
    convInfo: Conv2DInfo;
    bias?: Tensor;
    activation?: Activation;
    preluActivationWeights?: Tensor;
};
export declare const shouldFuse: (gradientDepth: number, activation: Activation) => boolean;