Class MathUtils

java.lang.Object
  MathUtils

public class MathUtils
extends java.lang.Object

Constructor Summary

MathUtils()

Method Summary

static void	arrCpy(double[] arrLfSrc, double[] arrLfDst)
static double[]	arrDblCpy(double[] arrLfSrc, int nLen)
static double[]	arrDblCpyRange(double[] arrLfSrc, int nStart, int nStop)
static double	arrDiffDot(double[] arrLf1, double[] arrLf2, double[] arrLfDot)
static double	arrDistSqrd(double[] arrLf1, double[] arrLf2)
static double	arrDot(double[] arrLf1, double[] arrLf2)
static void	arrMults(double[] arrLfMult, double lfMultBy)
static void	arrSubtrAndStore(double[] arrLfSubFrom, double[] arrLfSub)
static java.lang.String	arrToString(double[] arrLfPt)
static void	linCombine(double lfA, double[] arrLfA, double lfB, double[] arrLfB, double[] arrLfStore)
static void	makeSymmetric(Jama.Matrix M) Helper function to force a matrix to be symmetric in the simplest possible way (just copy (i,j) onto (j,i).
static void	normalize(double[] arrLfToNorm)

Methods inherited from class java.lang.Object

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

Constructor Detail

MathUtils

public MathUtils()

Method Detail

arrSubtrAndStore

public static void arrSubtrAndStore(double[] arrLfSubFrom,
                                    double[] arrLfSub)

linCombine

public static void linCombine(double lfA,
                              double[] arrLfA,
                              double lfB,
                              double[] arrLfB,
                              double[] arrLfStore)

arrDblCpy

public static double[] arrDblCpy(double[] arrLfSrc,
                                 int nLen)

arrDblCpyRange

public static double[] arrDblCpyRange(double[] arrLfSrc,
                                      int nStart,
                                      int nStop)

arrToString

public static java.lang.String arrToString(double[] arrLfPt)

arrDiffDot

public static double arrDiffDot(double[] arrLf1,
                                double[] arrLf2,
                                double[] arrLfDot)

arrDot

public static double arrDot(double[] arrLf1,
                            double[] arrLf2)

arrDistSqrd

public static double arrDistSqrd(double[] arrLf1,
                                 double[] arrLf2)

arrMults

public static void arrMults(double[] arrLfMult,
                            double lfMultBy)

arrCpy

public static void arrCpy(double[] arrLfSrc,
                          double[] arrLfDst)

normalize

public static void normalize(double[] arrLfToNorm)

makeSymmetric

public static void makeSymmetric(Jama.Matrix M)

Helper function to force a matrix to be symmetric in the simplest possible way (just copy (i,j) onto (j,i). Only useful for matrices that are almost symmetric, except for numerical error

Parameters:

M -