只使用你感兴趣的、所有平台上都提供的工具和功能，可让你获得最大程度的可移植行。
The extreme in portability is to use only those tools and features that exist on all platforms of interest.
你可能想要使用一个高精度库，为你处理这一种可移植的、可靠的方法。
You probably want to use a arbitrary precision library that handles this for you in a portable and reliable way. Why?
应用推荐