Struct nyx_space::propagators::RK4Fixed

pub struct RK4Fixed {}

RK4Fixed is a fixed step RK4.

If initialized with an PropOpts.with_adaptive_step, the variable step will not be taken into consideration.

Trait Implementations

impl RK for RK4Fixed

const ORDER: u8 = 4u8

Returns the order of this integrator (as u8 because there probably isn’t an order greater than 255). The order is used for the adaptive step size only to compute the error between estimates.

const STAGES: usize = 4usize

Returns the stages of this integrator (as usize because it’s used as indexing)

const A_COEFFS: &'static [f64] = _

Returns a pointer to a list of f64 corresponding to the A coefficients of the Butcher table for that RK. This module only supports implicit integrators, and as such, Self.a_coeffs().len() must be of size (order+1)*(order)/2. Warning: this RK trait supposes that the implementation is consistent, i.e. c_i = \sum_j a_{ij}.

const B_COEFFS: &'static [f64] = _

Returns a pointer to a list of f64 corresponding to the b_i and b^*_i coefficients of the Butcher table for that RK. Self.a_coeffs().len() must be of size (order+1)*2.