Here is a list of all files with brief descriptions:

bernstein.h
bezier_curve.h	Class allowing to create a Bezier curve of dimension 1 <= n <= 3
bezier_polynom_conversion.h
cubic_spline.h	Definition of a cubic spline
curve_abc.h	Interface for a Curve of arbitrary dimension
curve_constraint.h	Struct to define constraints on start / end velocities and acceleration on a curve
effector_spline.h
effector_spline_rotation.h
exact_cubic.h	Class allowing to create an Exact cubic spline
MathDefs.h
OptimizeSpline.h	Optimization loop for cubic spline generations
polynom.h	Definition of a cubic spline
quintic_spline.h
spline_deriv_constraint.h