如何为＆lt;＆tgmath.h GT;实施？ [英] How is <tgmath.h> implemented?

问题描述

C没有（据我所知）超载或模板，对不对？那么，怎样才能具有相同名称的一组类型无关的功能纯醇'C存在吗？通常编译时弄虚作假将涉及一大堆宏，不是吗？

C doesn't have (to the best of my knowledge) overloading or templates, right? So how can a set of type-agnostic functions with the same name exist in plain ol' C? The usual compile-time trickery would involve a whole bunch of macros, wouldn't it?

推荐答案

有就是它是如何工作的GCC <一个很好的解释href=\"https://web.archive.org/web/20131205042841/http://carolina.mff.cuni.cz/~trmac/blog/2005/the-ugliest-c-feature-tgmathh/\"相对=nofollow>此处。

There's a great explanation of how it works in GCC here.

此外，如果任何人都可以解决中等难度的运动，我很想知道答案。

Also, if anyone can solve the medium-difficulty exercise, I'd love to know the answer.

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