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A fast and easy to use dense and sparse matrix linear algebra library written in Java.

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/*
 * Copyright (c) 2009-2020, Peter Abeles. All Rights Reserved.
 *
 * This file is part of Efficient Java Matrix Library (EJML).
 *
 * 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.
 */

package org.ejml.data;

/**
 * Interface which all fixed sized matrices must implement
 *
 * @author Peter Abeles
 */
public interface DMatrixFixed extends DMatrix {
    @Override
    default  T create(int numRows, int numCols) {
        if( numRows == getNumRows() && numCols == getNumCols() )
            return createLike();
        throw new RuntimeException("Fixed sized matrices can't be used to create matrices of arbitrary shape");
    }
}