schurdecomposition.java

一个关于java 的常用工具包

package org.jutil.math.matrix;

/**
 * A class of schur decompositions of a matrix.
 *
 * @path    $Source: /cvsroot/org-jutil/jutil.org/src/org/jutil/math/matrix/SchurDecomposition.java,v $
 * @version $Revision: 1.4 $
 * @date    $Date: 2002/07/02 14:27:31 $
 * @state   $State: Exp $
 * @author  Marko van Dooren
 * @release $Name:  $
 */
public interface SchurDecomposition {

	/* The revision of this class */
	public final static String CVS_REVISION ="$Revision: 1.4 $";

 /*@
   @ public invariant Q().getNbColumns() == R().getNbColumns();
   @*/
	
	/**
	 * Return the R matrix of this SchurDecomposition.
	 */
 /*@
	 @ public behavior
	 @
	 @ post \result != null;
	 @ post \result.isUpperTriangular();
	 @ post \result.isSquare();
	 @*/
	public Matrix R();

	/**
	 * Return the Q matrix of this SchurDecomposition.
	 */
 /*@
	 @ public behavior
	 @
	 @ post \result != null;
	 @ // TODO: post \result.isUnary();
	 @ post \result.isSquare();
	 @*/
	public Matrix Q();
}

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behalf of the JUTIL.ORG Project. The copyright is dated by the dates 
after the "@date" tags above. All rights reserved.
This software is published under the terms of the JUTIL.ORG Software
License version 1.1 or later, a copy of which has been included with
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or FITNESS FOR A PARTICULAR PURPOSE. See the JUTIL.ORG Software 
License for more details.
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