static_for.hpp File Reference

A compile time unrolled loop. More...

#include <stdint.h>

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Classes
struct	static_for< from, to >
	Generate a fixed number of calls to a given free function at compile time. More...

Detailed Description

A compile time unrolled loop.

GCC is surprisingly conservative at unrolling loops with -funroll-loops (and even -funroll-all-loops):

• no nested loops (for, while), which works against inlining.
• if it will increase code size by small margins
• other factors I don't quite understand yet

In summary, it's designed for very simple cases where loop overhead is obviously high

See also

https://godbolt.org/z/6KGWajPaY