If you happen to desire to implement your own NURBS library, (and/or the bspline and bezier simplifications) take the nurbs book c reference implementation, and

If you happen to desire to implement your own NURBS library, (and/or the bspline and bezier simplifications) take the nurbs book c reference implementation, and modernize, convert to you language of choice. https://link.springer.com/book/10.1007/978-3-642-97385-7 https://link.springer.com/book/10.1007/978-3-642-97385-7