好用的弹出对话框，显示双精度浮点数。 好用的弹出对话框，显示双精度浮点数-Handy pop-up dialog box, showing double-precision floating-point numbers. Handy pop-up dialog box, showing double-precision floating point

解线性方程，误差分析以及时间统计（浮点数，双精度，整数），以及一些结论-Solving linear equations, error analysis, and time statistics (float, double precision, integer), and some conclusions