Struct FunctionSpace 

pub struct FunctionSpace {
    pub basis: Vec<fn(f64) -> f64>,
}

A finite-dimensional function space spanned by a list of basis functions.

Each basis element is a plain function pointer fn(f64) -> f64 to avoid lifetime complications with closures.

Fields

basis: Vec<fn(f64) -> f64>

Basis functions spanning this space.

Implementations

impl FunctionSpace

pub fn new(basis: Vec<fn(f64) -> f64>) -> Self

Create a new function space from a vector of basis functions.

pub fn eval(&self, i: usize, x: f64) -> f64

Evaluate the i-th basis function at x.

pub fn dim(&self) -> usize

Number of basis functions.

pub fn combine(&self, coeffs: &[f64], x: f64) -> f64

Evaluate a linear combination ∑ coeffs[i] * basis[i](x).

Panics if coeffs.len() != self.dim().

Trait Implementations

impl Clone for FunctionSpace

fn clone(&self) -> FunctionSpace

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FunctionSpace

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

Formats the value using the given formatter.