Jampack

Class Block

java.lang.Object

Jampack.Block

public class Block
extends Object

Block contains a static method for partitioning a matrix. into a block matrix.

Version:

Pre-alpha

Author:

G. W. Stewart

Constructor Summary

Constructors

Constructor and Description
Block()

Method Summary

Methods

Modifier and Type	Method and Description
static Zmat[][]	o(Zmat A, int[] ii, int[] jj) This method takes a Zmat A and two arrays ii and jj of length m and n and produces an (m-1)x(n-1) block matrix Zmat[m-1][n-1], whose (i,j)-element is A.get(ii[i], ii[i+1]-1, jj[j], jj[j+1]-1).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Block

public Block()

Method Detail

o

public static Zmat[][] o(Zmat A,
         int[] ii,
         int[] jj)
                  throws JampackException

This method takes a Zmat A and two arrays ii and jj of length m and n and produces an (m-1)x(n-1) block matrix Zmat[m-1][n-1], whose (i,j)-element is A.get(ii[i], ii[i+1]-1, jj[j], jj[j+1]-1). Throws a JampackException if

Parameters:

A - The matrix to be partitioned

ii[] - The row indices of the partition

jj[] - The column indices of the partition

Returns:

The block Zmat

Throws:

JampackException - Thrown if the submatrices are not conformable.