basis_function ZeroDivisionError

[Julien-Livet]

Describe the bug
The bug is a ZeroDivisionError when I evaluate a sample curve at parameter 1.0.

To Reproduce
Here is the code that produces the error.
from geomdl import NURBS

curve = NURBS.Curve()
curve.degree = 2
curve.ctrlpts = [[-2.0, -4.0, 0.0],
[-1.0, -4.0, 2.0],
[0.0, -4.0, 0.0],
[1.0, -4.0, 0.0],
[2.0, -4.0, 0.0]]
curve.weights = [1, 1, 1, 1, 1]
curve.knotvector = [0, 0, 0, 0, 1, 1, 1, 1]

print(curve.evaluate_single(1.0))

Expected Behavior
I expect the value [2, -4, 0].

Configuration:

• OS: Windows 10
• Python distribution: python.org
• Python version: 3.12.4
• geomdl install source: PyPI
• geomdl version: 5.3.1