sgrust 0.8.6

A sparse grid library written in Rust.
Documentation 
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use serde::{Deserialize, Serialize};
use crate::utilities::float::Float;

pub trait Basis
{
    fn eval(&self, level: u32, index: u32, x: f64) -> f64;
    /// Evaluate the basis function in T's native precision.
    /// Default implementation converts through f64; override for zero-cost evaluation.
    #[inline]
    fn eval_t<T: Float>(&self, level: u32, index: u32, x: T) -> T {
        T::from(self.eval(level, index, x.to_f64()))
    }
    fn eval_deriv(&self, level: u32, index: u32, x: f64) -> f64;
    fn degree(&self) -> usize;
    fn integral(&self, level: u32, index: u32) -> f64; 
    fn basis_type(&self) -> BasisFunction;
    fn node(&self, level: u32, index: u32) -> f64;
    fn num_nodes(&self, level: u32) -> usize;
    fn get_point(&self, level: u32, index: u32) -> f64;
    fn weights(&self, level: u32) -> Vec<f64>;
    fn nodes(&self, level: u32) -> Vec<f64>;
    fn interpolation_exactness(&self, level: u32) -> u32;
    fn quadrature_exactness(&self, level: u32) -> u32;
}


#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
pub enum BasisFunction
{
    Linear = 0,
    ClenshawCurtis = 1,
    GaussPatterson = 2,
    CustomBasis = 3,
    GaussLegendre = 4,
}