cern.colt.matrix.tdouble.impl.DelegateDoubleMatrix1D Maven / Gradle / Ivy

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Parallel Colt is a multithreaded version of Colt - a library for high performance scientific computing in Java. It contains efficient algorithms for data analysis, linear algebra, multi-dimensional arrays, Fourier transforms, statistics and histogramming.

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/*
Copyright (C) 1999 CERN - European Organization for Nuclear Research.
Permission to use, copy, modify, distribute and sell this software and its documentation for any purpose 
is hereby granted without fee, provided that the above copyright notice appear in all copies and 
that both that copyright notice and this permission notice appear in supporting documentation. 
CERN makes no representations about the suitability of this software for any purpose. 
It is provided "as is" without expressed or implied warranty.
 */
package cern.colt.matrix.tdouble.impl;

import cern.colt.matrix.tdouble.DoubleMatrix1D;
import cern.colt.matrix.tdouble.DoubleMatrix2D;
import cern.colt.matrix.tdouble.DoubleMatrix3D;

/**
 * 1-d matrix holding double elements; a view wrapping another 2-d
 * matrix and therefore delegating calls to it.
 * 
 * @author [email protected]
 * @version 1.0, 09/24/99
 * @author Piotr Wendykier ([email protected])
 */
class DelegateDoubleMatrix1D extends DoubleMatrix1D {
    private static final long serialVersionUID = 1L;

    /*
     * The elements of the matrix.
     */
    protected DoubleMatrix2D content;

    /*
     * The row this view is bound to.
     */
    protected int row;

    /**
     * Constructs a matrix view with a given content and row
     * 
     * @param newContent
     *            the content of this view
     * @param row
     *            the row this view is bound to
     */
    public DelegateDoubleMatrix1D(DoubleMatrix2D newContent, int row) {
        if (row < 0 || row >= newContent.rows())
            throw new IllegalArgumentException();
        setUp(newContent.columns());
        this.row = row;
        this.content = newContent;
    }

    public synchronized double getQuick(int index) {
        return content.getQuick(row, index);
    }

    public DoubleMatrix1D like(int size) {
        return content.like1D(size);
    }

    public DoubleMatrix2D like2D(int rows, int columns) {
        return content.like(rows, columns);
    }

    public synchronized void setQuick(int index, double value) {
        content.setQuick(row, index, value);
    }

    public Object elements() {
        return content.elements();
    }

    public DoubleMatrix2D reshape(int rows, int columns) {
        throw new IllegalArgumentException("This method is not supported.");
    }

    public DoubleMatrix3D reshape(int slices, int rows, int columns) {
        throw new IllegalArgumentException("This method is not supported.");
    }

    protected DoubleMatrix1D viewSelectionLike(int[] offsets) {
        throw new InternalError(); // should never get called
    }

}