/*
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 *  * This program and the accompanying materials are made available under the
 *  * terms of the Apache License, Version 2.0 which is available at
 *  * https://www.apache.org/licenses/LICENSE-2.0.
 *  *
 *  *  See the NOTICE file distributed with this work for additional
 *  *  information regarding copyright ownership.
 *  * 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.
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package org.nd4j.linalg.activations;

import org.nd4j.linalg.api.ndarray.INDArray;

import java.util.Arrays;

public abstract class BaseActivationFunction implements IActivation {

    @Override
    public int numParams(int inputSize) {
        return 0;
    }

    protected void assertShape(INDArray in, INDArray epsilon){
        if(!in.equalShapes(epsilon)){
            throw new IllegalStateException("Shapes must be equal during backprop: in.shape{} = " + Arrays.toString(in.shape())
                    + ", epsilon.shape() = " + Arrays.toString(epsilon.shape()));
        }
    }
}
