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Class Jampack.Zdiagmat 

java.lang.Object
   |
   +----Jampack.Zdiagmat
public class Zdiagmat
extends Object
Zdiagmat is a storage efficient representation of a complex diagonal matrix.

Variable Index

o basex
The base index
o bx
The base index (public)
o dx
The index of the last diagonal (public)
o im
The imaginary part of the diagonal
o n
The order of the matrix (public)
o order
The order of the matrix
o re
The real part of the diagonal

Constructor Index

o Zdiagmat(int)
Constructs a Zdiagmat and initializes it to zero.
o Zdiagmat(int, Z)
Constructs a Zdiagmat and initializes it to a constant.
o Zdiagmat(Z1)
Constructs a Zdiagmat and initializes it to a Z1.
o Zdiagmat(Zdiagmat)
Constructs a Zdiagmat and initializes it to another Zdiagmat.
o Zdiagmat(Zmat)
Constructs a Zdiagmat and initializes it to the principal diagonal of a Zmat.
o Zdiagmat(Zmat, int)
Constructs a Zdiagmat and initializes it to the diagonal of a Zmat.

Method Index

o get(int)
Gets the ii-th diagonal element of a Zdiagmat.
o get0(int)
Gets the ith diagonal of a of a Zdiagmat (0-based).
o getProperties()
Sets the public parameters.
o put(int, Z)
Writes the ii-th diagonal element of a Zdiagmat.
o put0(int, Z)
Writes the ith diagonal element of a Zdiagmat (0-based).

Variables

o order 
 protected int order
The order of the matrix

o basex 
 protected int basex
The base index

o re 
 protected double re[]
The real part of the diagonal

o im 
 protected double im[]
The imaginary part of the diagonal

o n 
 public int n
The order of the matrix (public)

o bx 
 public int bx
The base index (public)

o dx 
 public int dx
The index of the last diagonal (public)

Constructors

o Zdiagmat 
 public Zdiagmat(int order)
Constructs a Zdiagmat and initializes it to zero.

Parameters:
order - The order of the new Zdiagmat
Returns:
A Zdiagmat initialized to zero.
o Zdiagmat 
 public Zdiagmat(int order,
                 Z val)
Constructs a Zdiagmat and initializes it to a constant.

Parameters:
order - The order of the new Zdiagmat
val - The value to which the diagonal is to be initialized
Returns:
A Zdiagmat whose diagonal is val.
o Zdiagmat 
 public Zdiagmat(Z1 val)
Constructs a Zdiagmat and initializes it to a Z1.

Parameters:
val - A Z1
Returns:
A Zdiagmat whose diagonal elements are the elements of val.
o Zdiagmat 
 public Zdiagmat(Zmat A,
                 int k) throws JampackException
Constructs a Zdiagmat and initializes it to the diagonal of a Zmat.

Parameters:
A - The Zmat
k - The diagonal. For k=0 gives the princpal diagonal; k>0, the kth superdiagonal; k<0, the kth subdiagonal.
Returns:
The Zdiagmat consisting of the selected diagonal of A
Throws: JampackException
Thrown for k to large or small.
o Zdiagmat 
 public Zdiagmat(Zmat A) throws JampackException
Constructs a Zdiagmat and initializes it to the principal diagonal of a Zmat.

Parameters:
A - A Zmat
Returns:
s A Zdiagmat whose diagonal is that of A
Throws: JampackException
Passed from below.
o Zdiagmat 
 public Zdiagmat(Zdiagmat D)
Constructs a Zdiagmat and initializes it to another Zdiagmat.

Parameters:
D - A Zdiagmat
Returns:
s A Zdiagmat that is a copy of D.

Methods

o getProperties 
 public void getProperties()
Sets the public parameters.

o get 
 public Z get(int ii)
Gets the ii-th diagonal element of a Zdiagmat.

Parameters:
ii - An integer
Returns:
The ii-th element of this Zdiagmat
o get0 
 public Z get0(int i)
Gets the ith diagonal of a of a Zdiagmat (0-based).

o put 
 public void put(int ii,
                 Z val)
Writes the ii-th diagonal element of a Zdiagmat.

Parameters:
ii - An integer
val - A Z
Returns:
Resets the ii-th diagonal element of this Zdiagmat to val.
o put0 
 public void put0(int i,
                  Z val)
Writes the ith diagonal element of a Zdiagmat (0-based). 

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