Struct rootfind::convergence::DeltaX

pub struct DeltaX { /* fields omitted */ }

DeltaX converges when the distance along the x-axis between successive iterations becomes smaller than epsilon_abs.

The test_pathology_microstep() shows a situation where this converges prematurely. Specifically, for a method like Newton-Raphson, a massive first derivative means taking only a small step along the x-axis even when far from the actual root.

Methods

impl DeltaX

fn new(epsilon_abs: f64) -> DeltaX

Trait Implementations

impl IsConverged for DeltaX

fn is_converged(&self, x_pre: f64, x_cur: f64, _f_cur: f64) -> bool

Indicate whether root-finding has converged.