Enum Method 

pub enum Method {
    Trapezoidal,
    Gear,
    TrBdf2,
}

The .options method= integration method.

Variants

Trapezoidal

trap (default): the 3f5’s trapezoidal rule, order 1 after breakpoints, 2 otherwise.

Gear

gear: variable-order BDF up to MAXORD.

TrBdf2

trbdf2: Dune’s opt-in TR-BDF2 composite (Bank et al., IEEE Trans. ED 32(10), 1985; Hosea & Shampine, Appl. Numer. Math. 20, 1996). Each step h is a trapezoidal stage to t + γh, γ = 2 − √2, then a BDF2 stage on {t, t + γh, t + h}: one-step, second order and L-stable, so stiff modes that the trapezoidal rule rings (−1 amplification as h/τ → ∞) are damped. Not a SPICE method: the 3f5 contract (D-0002) holds only for trap/gear.

Trait Implementations

impl Clone for Method

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Method

impl Debug for Method

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

Formats the value using the given formatter.

impl Eq for Method

impl PartialEq for Method

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Method