Struct IVPSolver 

pub struct IVPSolver {
    pub arg_name: String,
    pub x_range: (f64, f64),
    pub unknowns: Vec<String>,
    pub eq_system: Vec<Expr>,
    pub BorderConditions: HashMap<String, (usize, f64)>,
    pub solution: Option<DMatrix<f64>>,
    pub x_mesh: Option<DVector<f64>>,
    pub quality: SolutionQuality,
}

Boundary Value Problem solver wrapper

Supports multiple solver backends:

Fields

arg_name: String

Independent variable name (typically “x” or “z”)

x_range: (f64, f64)

Domain range (start, end) - typically (0.0, 1.0) for dimensionless

unknowns: Vec<String>

Names of unknown variables [“Teta”, “q”, “C0”, “J0”, “C1”, “J1”, …]

eq_system: Vec<Expr>

System of differential equations dy/dx = f(x,y)

BorderConditions: HashMap<String, (usize, f64)>

Boundary conditions: variable -> (boundary_index, value)

solution: Option<DMatrix<f64>>

Solution matrix (variables × mesh_points)

x_mesh: Option<DVector<f64>>

Spatial mesh points

quality: SolutionQuality

struct that stores balance errors - filled at the end of solution

Implementations

impl IVPSolver

pub fn get_solution(&self) -> Option<&DMatrix<f64>>

Get reference to solution matrix

Returns None if solve hasn’t been called yet

pub fn debug_solution(&self)

Debug print solution summary

Prints solution matrix dimensions and sample values for each variable

Trait Implementations

impl Clone for IVPSolver

fn clone(&self) -> IVPSolver

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IVPSolver

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

Formats the value using the given formatter.

impl Default for IVPSolver

fn default() -> Self

Returns the “default value” for a type.