static bool TryScanForCrossingsWithRoots(Func <double, double> f, Func <double, double> df, double lowerBound, double upperBound, double accuracy, int maxIterations, int subdivision, out double root)
{
var zeroCrossings = ZeroCrossingBracketing.FindIntervalsWithin(f, lowerBound, upperBound, subdivision);
foreach (Tuple <double, double> bounds in zeroCrossings)
{
if (TryFindRoot(f, df, bounds.Item1, bounds.Item2, accuracy, maxIterations, subdivision, out root))
{
return(true);
}
}
root = double.NaN;
return(false);
}
/// <summary>Find a solution of the equation f(x)=0.</summary>
/// <exception cref="NonConvergenceException"></exception>
public static double FindRootExpand(Func <double, double> f, double guessLowerBound, double guessUpperBound, double accuracy = 1e-8, double expandFactor = 1.6, int maxExpandIteratons = 100)
{
ZeroCrossingBracketing.Expand(f, ref guessLowerBound, ref guessUpperBound, expandFactor, maxExpandIteratons);
return(FindRoot(f, guessLowerBound, guessUpperBound, accuracy));
}