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ParametricTimeSystem

eqiora::time

Trait ParametricTimeSystem 

pub trait ParametricTimeSystem: TimeSystem {
    // Required methods
    fn parameter_dimension(&self) -> usize;
    fn parameters(&self) -> &[f64];
    fn rhs_parameter_jvp(
        &self,
        time: f64,
        state: &[f64],
        parameter_direction: &[f64],
        output: &mut [f64],
    ) -> Result<(), Diagnostic>;
    fn initial_parameter_jvp(
        &self,
        time: f64,
        parameter_direction: &[f64],
        output: &mut [f64],
    ) -> Result<(), Diagnostic>;

    // Provided method
    fn mass_parameter_dependence(&self) -> MassParameterDependence { ... }
}
Description

Parameter actions required to integrate continuous forward sensitivities.

This extends the same lowered primal/JVP system rather than introducing a dual-number simulator or a backend-specific derivative model. Parameters are fixed at one linearization point; the two methods provide f_p dp and y0_p dp actions for arbitrary parameter directions.

Required Methods§

fn parameter_dimension(&self) -> usize

Signature links:parameter_dimensionusize

Number of scalar model parameters at this linearization point.

fn parameters(&self) -> &[f64]

Signature links:parametersf64

Finite parameter values defining the primal linearization point.

fn rhs_parameter_jvp( &self, time: f64, state: &[f64], parameter_direction: &[f64], output: &mut [f64], ) -> Result<(), Diagnostic>

Signature links:rhs_parameter_jvpf64f64f64f64Result()Diagnostic

Evaluate f_p(t, y) parameter_direction.

§Errors

Returns a stable diagnostic when the parameter action cannot be evaluated.

fn initial_parameter_jvp( &self, time: f64, parameter_direction: &[f64], output: &mut [f64], ) -> Result<(), Diagnostic>

Signature links:initial_parameter_jvpf64f64f64Result()Diagnostic

Evaluate y0_p parameter_direction.

§Errors

Returns a stable diagnostic when the initial-state action cannot be evaluated.

Provided Methods§

fn mass_parameter_dependence(&self) -> MassParameterDependence

Signature links:mass_parameter_dependenceMassParameterDependence

State whether the mass action is proven independent of parameters.

Explicit ODE sensitivity does not consult this value. The fail-closed default prevents a missing M_p y_dot term from silently becoming zero for a mass-matrix system.

Implementors§