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//函数说明

//函数名称：Correlation

//函数功能：计算最小二乘法拟合的多项式的相关系数

//使用方法：int M------ 拟合多项式的阶数（已知条件）

// double *b--- 拟合曲线的系数,排列顺序为由高阶到低阶（已知条件）

//　　　　　　double *x--- 结点x轴数据（已知条件）

//　　　　　　double *y--- 结点y轴数据（已知条件）

//　　　　　　double *Yg-- 结点估计值，个数为m（过程变量）

//　　　　　　int m------ 结点个数（已知条件）

//注意事项：多项式阶数最高为10,多项式的形式为 y = a0 + a1x +a2x2

-//=== === === === === ==== === === === === === === = / / letter Descr iption / / function name : Correlation / / Function functions : Calculation least squares polynomial fitting of the correlation coefficient / / Use : int M ------ polynomial fitting stage (known condition) / / * b --- double fitting song The coefficient, Higher-order the order on grounds of low order (known condition) / / * double-node x x axis data (known to be pieces) / / double * y --- node y-axis data (known condition) / / * double FSL -- Nodes estimates, Number m (process variables) / / int m ------ node number (known condition) / / Note : polynomial order of a maximum of 10. polynomials in the form of y = a0 a1x a2x2 //==================== ========================================