CCPP-count-number

最小二乘法求超定线性方程组得C＋＋模板，还包括矩阵求逆，矩阵乘法等小函数(Overdetermined least-squares method of linear equations have to C templates, also includes matrix inversion, matrix multiplication, such as small function)

已知日期，计算出星期几的程序.以过测试。计算正确。请放心使用。(Caculate Weekday)

用C++编写的一维和二维快速傅里叶变换程序(Prepared with C++ one-dimensional and two-dimensional fast Fourier transform procedure)

FFT DIF 分裂基的C语言代码，比较好的说明了整个流程(FFT DIF split the base of the C language code, better explains the entire process)

a very easy .c file for calculating the products of ints

由散点插值生成等值线,并且提供颜色选择工具,共有三种插值方法(Generating isolines from scattered interpolation and providing a color selection tool, there are three interpolation methods)

计算方法实验，通过编程实现埃特金加速法，一般迭代法，牛顿法的收敛次数的计算(calculated experiment, Programming Aitken acceleration method, the general iterative method, the convergence of Newton's method of calculating the number of)

本程序是基于非等距节点的正交多项式的最小二乘法拟合算法，该算法已经在vc++6.0下调试通过，经多次验证，本算法的拟合误差较小。(This procedure is based on equidistant nodes of non-orthogonal polynomial least squares fit algorithm, which has been in vc++6.0 through debugging, after repeated verification, the algorithm of fitting error is small.)

有限元n维实体材料单元，仅供科研用途，拒绝商业使用(N-dimensional finite element solid material element, for scientific purposes, refusing commercial use)

四阶龙格库塔法函数更新四元数程序代码,采用VC编写(Fourth-order Runge-Kutta method function is updated quaternion code)