com.analog.lyric.math.LyricSingularValueDecomposition.java Source code

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Here is the source code for com.analog.lyric.math.LyricSingularValueDecomposition.java

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/*******************************************************************************
*   Copyright 2012 Analog Devices, Inc.
*
*   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 com.analog.lyric.math;

import org.apache.commons.math3.linear.RealMatrix;
import org.apache.commons.math3.linear.SingularValueDecomposition;

import com.analog.lyric.dimple.exceptions.DimpleException;

public class LyricSingularValueDecomposition extends SingularValueDecomposition {
    public LyricSingularValueDecomposition(RealMatrix arg0) {
        super(checkMatrix(arg0));
    }

    private static RealMatrix checkMatrix(RealMatrix m) {
        for (int i = 0; i < m.getRowDimension(); i++) {
            for (int j = 0; j < m.getColumnDimension(); j++) {
                if (Double.isNaN(m.getEntry(i, j)) || Double.isInfinite(m.getEntry(i, j))) {
                    throw new DimpleException("cannot do SVD on matrix that contains NaN or infinite");
                }
            }
        }
        return m;
    }
}