Struct Rkf45 

pub struct Rkf45 {
    pub config: OdeSolverConfig,
    /* private fields */
}

Runge-Kutta-Fehlberg 4(5) explicit solver with adaptive step size. Maps to Foam::RKF45.

Fields

config: OdeSolverConfig

Adaptive step-size controller settings (tolerances, scale limits).

Implementations

impl Rkf45

pub fn new(n: usize, abs_tol: f64, rel_tol: f64) -> Self

Create a solver for an n-equation system with the given absolute and relative per-equation error tolerances; other controller parameters take their OdeSolverConfig::default values.

pub fn solve_step<Sys: OdeSystem + ?Sized>( &mut self, ode: &Sys, x: &mut f64, y: &mut Vec<f64>, dx_try: &mut f64, ) -> Result<(), OdeError>

Take one adaptive step. On return x and y are updated and dx_try holds a suggested step size for the next call.

pub fn integrate<Sys: OdeSystem + ?Sized>( &mut self, ode: &Sys, x_start: f64, x_end: f64, y: &mut Vec<f64>, dx_est: &mut f64, ) -> Result<(), OdeError>

Integrate from x_start to x_end, updating y in place and leaving the last accepted step size in dx_est.

Trait Implementations

impl Clone for Rkf45

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Rkf45

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.