全选主元高斯消去法agaus.c

代码说明：

全选主元高斯消去法agaus.c--返回零表示原方程组的系数矩阵奇异，返回的标志值不为零，则表示正常返回。-entire election PCA Gaussian Elimination agaus.c--return to the original equation is expressed by the coefficient matrix, a sign of the return value is not zero, then returned to normal.