steinwurf / cpuid Goto Github PK

Hey.
I was looking around for a cross compiler library like this and looks like this is the best so far.

Would it be possible to add a test for F16C extensions? https://en.wikipedia.org/wiki/F16C
EAX == 1, ECX bit 29.

I'm building some Vulkan stuff (libraries) on my free time, and I'm considering using 16 bit floats for HDR textures to save some VRAM. Currently I have a pretty good sulution of converting between the two but I wouldn't mind a speedup on processors that support this.

Configure breaks:

Checking C++ compiler 'c++'              : Recurse "waf-tools" for "configure" failed with: Unknown compiler: c++
(complete log in /disk-samsung/freebsd-ports/devel/cpuid/work/cpuid-8.0.0-38-g5755ad8/build/freebsd/config.log)

clang-14
FreeBSD 13.1

It's better to use the following technique instead of reading /proc/... file.
See for details https://github.com/Itseez/opencv/pull/3568/files

See the full description in this issue in sfizz project which breaks: sfztools/sfizz#1116

I believe we also should check whether OS itself supports AVX, because OS must provide context switching for YMM registers and not all OS can do this.
See the section "Operating system support" in http://en.wikipedia.org/wiki/Advanced_Vector_Extensions

Hello,

Could you offer a version of h file (Even in C) for detection of CPU features?
Something which expose simple functions like hasSSE3(), hasSSE4(), hasAVX(), hasAVX2(), etc...

Thank You.