Bspline_base            Build B-spline basis in piecewise polynomial
                        form Computes local polynomial coefficients for
                        each B-spline basis function on each interval.
                        Polynomials are expressed in the canonical
                        basis Uses De Boor's recursion formula.
Bspline_deriv           Differentiate a B-spline basis
SplineConstQuantRegBs3
                        Constrained quantile regression with cubic
                        splines
Spline_der_knots        Derivatives at knots of a B-spline
apply_karlin_constraints
                        Karlin-Studden constraints for positivity
bs_direct               Direct evaluation of a B-spline basis
bspline_to_deriv_coeffs_pp
                        Convert B-spline to derivative coefficients
change_polynomial_base_taylor
                        Change polynomial basis (Taylor expansion)
is_beta                 Check if package is beta version
package_version         Get package version
poly_eval               Evaluate polynomial
polyadd                 Polynomial addition
polyderiv               Polynomial derivative Computes the derivative
                        of order 'der' of a polynomial.
polymul                 Polynomial multiplication
reduce_pol              Reduce polynomial
spline_eval             Evaluate a B-spline
test_karlin_simple      Comprehensive test function
view_basis              Visualize a B-spline functions basis
