Zludpp

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java.lang.Object
- Jampack.Zludpp

```
public class Zludpp
extends Object
```
Zludpp implements the LU decomposition with partial pivoting. Specifically, given a matrix A, there is a permunation matrix P, a unit lower triangular matrix L whose subdiagonal elements are less than one in magnitude and a upper triangular matrix U such that
```
     A = PLU
```
Zludpp represents P as a pivot array (see Pivot.java ), L as a Zltmat, and U as a Zutmat.

Field Summary

Fields
Modifier and Type	Field and Description
`Zltmat`	`L` The lower triangular matrix L
`int`	`ncl` The number of columns in L
`int`	`nrl` The number of rows in L
`int[]`	`pvt` The pivot array (see Pivot.java )
`Zutmat`	`U` The upper triangular matrix U

Constructor Summary

Constructors
Constructor and Description

Zludpp(Zmat A)
Computes the partially pivoted LU decompostion.

Method Summary
- Methods inherited from class java.lang.Object
  equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - nrl
```
public int nrl
```
    The number of rows in L
  - ncl
```
public int ncl
```
    The number of columns in L
  - pvt
```
public int[] pvt
```
    The pivot array (see Pivot.java )
  - L
```
public Zltmat L
```
    The lower triangular matrix L
  - U
```
public Zutmat U
```
    The upper triangular matrix U
- Constructor Detail
  - Zludpp
```
public Zludpp(Zmat A)
       throws JampackException
```
    Computes the partially pivoted LU decompostion.
    
    Parameters:
    
    A - A Zmat
    
    Throws:
    
    JampackException - Passed from below.

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Jas4pp 1.5 © Java Analysis Studio for Particle Physics