Trait nyx_space::propagators::RK [−][src]
pub trait RK where
Self: Sized, {
const ORDER: u8;
const STAGES: usize;
const A_COEFFS: &'static [f64];
const B_COEFFS: &'static [f64];
}
Expand description
The RK
trait defines a Runge Kutta integrator.
Associated Constants
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.
Returns the stages of this integrator (as usize because it’s used as indexing)
const A_COEFFS: &'static [f64]
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]
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.