Struct CrossSectionPlan 

pub struct CrossSectionPlan<'a> { /* private fields */ }

Reusable evaluation plan for one immutable resonance source.

The formalism-specific resonance caches (J-groups, reduced width amplitudes, penetrability at each resonance energy) are built once by CrossSectionPlan::new and reused by every evaluation. This is the primitive that lets the continuous Doppler integral evaluate the same ENDF equation on many adaptively chosen energies without rebuilding the caches per quadrature panel; cross_sections_on_grid is the plan applied to one grid.

Implementations

impl<'a> CrossSectionPlan<'a>

pub fn new(data: &'a ResonanceData) -> Self

Build the per-range caches for data.

pub fn evaluate_one(&self, energy_ev: f64) -> CrossSections

Cross-sections at one energy, summed over every range covering it.

Panics

Panics if energy_ev is non-finite or non-positive — the same public contract as cross_sections_at_energy.

pub fn evaluate(&self, energies: &[f64]) -> Vec<CrossSections>

Cross-sections at every energy of energies, in order.

Panics

Panics if any element of energies is non-finite or non-positive. Validating the entire grid up-front (O(n) branch, one pass) means a single bad energy fails fast with a clear message instead of being hidden inside the inner loop.