Package jdistlib.accelerator

Class LuFactor

java.lang.Object
jdistlib.accelerator.LuFactor
public final class LuFactor extends Object
Immutable FP64 partial-pivoted LU factorization of a square matrix.

  • Constructor Summary

    Constructors
    Constructor
    Description
    LuFactor(int dimension, double[] packed, int[] permutation, int determinantSign)
    Creates a factor where row i came from original row permutation[i].

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    determinantSign()
     
    int
    dimension()
     
    double
    logAbsDeterminant()
     
    double[]
    packed()
    Returns packed unit-lower and upper factors in row-major storage.
    int[]
    permutation()
    Returns the new-to-original row permutation.
    double[]
    solve(double[] right)
     
    double[]
    solve(double[] right, int columns)
    Solves A*X=right; right sides use row-major dimension-by-columns storage.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • LuFactor

      public LuFactor(int dimension, double[] packed, int[] permutation, int determinantSign)
      Creates a factor where row i came from original row permutation[i].

  • Method Details

    • dimension

      public int dimension()

    • packed

      public double[] packed()
      Returns packed unit-lower and upper factors in row-major storage.

    • permutation

      public int[] permutation()
      Returns the new-to-original row permutation.

    • determinantSign

      public int determinantSign()

    • logAbsDeterminant

      public double logAbsDeterminant()

    • solve

      public double[] solve(double[] right)

    • solve

      public double[] solve(double[] right, int columns)
      Solves A*X=right; right sides use row-major dimension-by-columns storage.