/*
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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.
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 *  *  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
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package org.deeplearning4j.nn.conf.constraint;

import lombok.Data;
import lombok.EqualsAndHashCode;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.indexing.BooleanIndexing;
import org.nd4j.linalg.indexing.conditions.Conditions;

@Data
@EqualsAndHashCode(callSuper = true)
public class NonNegativeConstraint extends BaseConstraint {

    public NonNegativeConstraint(){ }

    @Override
    public void apply(INDArray param) {
        BooleanIndexing.replaceWhere(param, 0.0, Conditions.lessThan(0.0));
    }

    @Override
    public NonNegativeConstraint clone() { return new NonNegativeConstraint();}

}
