//! Interpolation and approximation organization.
//!
//! # Status: Partial
//!
//! PCHIP is available under `pchip`; owned B-spline, PP, and tabulated global
//! polynomial representations are available under `bspline`,
//! `piecewise_polynomial`, and `tabulated`. Other interpolation families
//! remain reserved until their storage and numerical contracts are audited.
/// Checked approximation and fitting methods.
/// B-spline interpolation.
/// Chebyshev interpolation.
/// Divided-difference interpolation.
/// Piecewise-cubic Hermite interpolation.
/// Piecewise-polynomial interpolation.
/// Checked tabulated samples and global polynomial interpolation.