C++ libstdcxx Projects

std-simd

9 544 1.1 C++

std::experimental::simd for GCC [ISO/IEC TS 19570:2018]

Project mention: A proposal for the next version of C [pdf] | news.ycombinator.com | 2024-01-20

neither proposing nor taking a position on this possible addition)
> ... For completeness we would also like to add that a serious issue is that C still lacks vector operations.
Those are good points. The authors don't take a stance on it, but I do think that syntax for packed structs should be standardized. IMO, so should syntax for inline assembly (both as optional features). These are already common extensions; this is exactly what they should standardize. The additions of "typeof" and #embed are also good examples of this (they had been talking about adding #embed since 1995 [1]).
As for vector instructions, I'm unsure how it could be implemented in a standard way, but I'm not against it. Maybe something like this [2], but with the syntax changed for C instead of C++.
[1]: https://groups.google.com/g/comp.std.c/c/zWFEXDvyTwM
[2]: https://github.com/VcDevel/std-simd

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