Package no.uib.cipr.matrix

Class GivensRotation

  • public class GivensRotation
extends java.lang.Object
    Givens plane rotation

    • Constructor Summary

      Constructors 
      Constructor Description
      GivensRotation​(double x, double y)
      Constructs a Givens plane rotation for a given 2-vector

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void apply​(Matrix H, int column, int i1, int i2)
      Applies the Givens rotation to two elements in a matrix column
      void apply​(Vector x, int i1, int i2)
      Applies the Givens rotation to two elements of a vector

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • GivensRotation

        public GivensRotation​(double x,
                      double y)
        Constructs a Givens plane rotation for a given 2-vector
        Parameters:
        x - First component of the vector
        y - Second component of the vector

    • Method Detail

      • apply

        public void apply​(Matrix H,
                  int column,
                  int i1,
                  int i2)
        Applies the Givens rotation to two elements in a matrix column
        Parameters:
        H - Matrix to apply to
        column - Column index
        i1 - Row index of first element
        i2 - Row index of second element

      • apply

        public void apply​(Vector x,
                  int i1,
                  int i2)
        Applies the Givens rotation to two elements of a vector
        Parameters:
        x - Vector to apply to
        i1 - Index of first element
        i2 - Index of second element