public static double[] DiagonalizeSymmMatrix(double[,] m, out double[,] evec)
{
double[] d;
double[] e;
evec = (double[, ])m.Clone();
NumericalRecipes.Tred2(evec, out d, out e);
NumericalRecipes.Tqli(d, e, evec);
return(d);
}
