JSci.maths.matrices.RingMatrix Maven / Gradle / Ivy

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JSci is a set of open source Java packages. The aim is to encapsulate scientific methods/principles in the most natural way possible. As such they should greatly aid the development of scientific based software. It offers: abstract math interfaces, linear algebra (support for various matrix and vector types), statistics (including probability distributions), wavelets, newtonian mechanics, chart/graph components (AWT and Swing), MathML DOM implementation, ... Note: some packages, like javax.comm, for the astro and instruments package aren't listed as dependencies (not available).

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package JSci.maths.matrices;

import JSci.GlobalSettings;
import JSci.maths.groups.AbelianGroup;
import JSci.maths.algebras.*;
import JSci.maths.fields.*;

/**
* The RingMatrix class provides an object for encapsulating matrices over an arbitrary ring.
* @version 1.1
* @author Mark Hale
*/
public class RingMatrix extends Matrix {
        /**
        * Array containing the elements of the matrix.
        */
        protected Ring.Member matrix[][];
        /**
        * Constructs a matrix.
        */
        protected RingMatrix(final int rows, final int cols) {
                super(rows,cols);
        }
        /**
        * Constructs a matrix by wrapping an array.
        * @param array an assigned value
        */
        public RingMatrix(final Ring.Member array[][]) {
                this(array.length,array[0].length);
                matrix=array;
        }
        /**
        * Compares two matrices for equality.
        * @param m a matrix
        */
        public boolean equals(Object m) {
                if(m!=null && (m instanceof RingMatrix) &&
                numRows==((RingMatrix)m).rows() && numCols==((RingMatrix)m).columns()) {
                        final RingMatrix rm=(RingMatrix)m;
                        for(int j,i=0;i=0 && i=0 && j=0 && i=0 && j