科学与工程数值算法的源代码，有复数的计算，矩阵的计算，线性代数方程组的求解，非线性代数方程组的求解，插值，数值积分等，很实用！-Science and Engineering numerical algorithm s source code, there is the plural of calculation, matrix calculation, linear algebra equations, nonlinear algebraic equations, interpolation,