Class for construction of cubic natural and periodic splines. Allows to construct the spline passing through set points. Using Qt4.

Natural Cubic 插值，里面有一个经典实例，希望有用-Natural Cubic Splines interpolation, there are a classic example of the hope that useful. . .

Code to find natural splines

该程序实现了三次样条函数插值算法，并提供多种边界条件以供选择，包括自然三次样条与给定边界点导数值等。-The program implements a cubic spline function interpolation algorithm, and offers a variety of boundary conditions for selection, including natural cubic splines with a given boundary point derivati

Class for construction of cubic natural and periodic splines()