Struct ScatteringInterpolationTable 

pub struct ScatteringInterpolationTable { /* private fields */ }

Precomputed scattering matrices at log-spaced pot positions.

At compile time, sweeps the pot through K positions and computes full-precision scattering matrices. At runtime, binary search + linear interpolation replaces O(n³) matrix inversion with O(n²) lerp.

Implementations

impl ScatteringInterpolationTable

pub fn build( mna: &MnaSystem, pot_node_pos: Option<usize>, pot_node_neg: Option<usize>, initial_g: f64, r_min: f64, r_max: f64, ports: &[WdfPort], vs_idx: Option<usize>, k: usize, ) -> ScatteringInterpolationTable

Build a table by sweeping the pot through K log-spaced positions.

• mna: base MNA system (pot already stamped at initial_g)
• pot_node_pos, pot_node_neg: MNA node indices for the pot
• initial_g: current pot conductance stamped in the MNA G matrix
• r_min, r_max: pot resistance range (typically 1.0 to max_resistance)
• ports: WDF port definitions (reactive ports, no pot port)
• vs_idx: voltage source index for VS injection (None for standard mode)
• k: number of table entries

pub fn lookup(&self, pot_resistance: f64) -> (Vec<f64>, Vec<f64>)

Look up scattering matrix and VS injection vector by interpolating in log-resistance space. Returns (scattering, vs_injection).

pub fn has_vs_injection(&self) -> bool

Returns true when VS injection vectors are non-trivial (any entry != 0).

pub fn resistances(&self) -> &[f64]

Log-spaced resistance samples (ascending).

pub fn matrices(&self) -> &[Vec<f64>]

Scattering matrices, one per resistance sample, each n_ports² entries.

pub fn injections(&self) -> &[Vec<f64>]

VS injection vectors, one per resistance sample, each n_ports entries.