Implement AVX512_FP16 #2271

Job	Run time
Check Style	14s
Automatic intrinsic verification	32s
Env Override (ubuntu-latest)	12s
Env Override (windows-latest)	34s
Build Documentation	18s
Test (i686-unknown-linux-gnu)	34s
Build std_detect	59s
Test (x86_64-unknown-linux-gnu)	34s
Test (x86_64-unknown-linux-gnu-emulated)	29s
Test (arm-unknown-linux-gnueabihf)	47s
Test (armv7-unknown-linux-gnueabihf)	47s
Test (aarch64-unknown-linux-gnu)	46s
Test (riscv64gc-unknown-linux-gnu)	44s
Test (powerpc64le-unknown-linux-gnu)	48s
Test (s390x-unknown-linux-gnu)	47s
Test (wasm32-wasip1)	47s
Test (i586-unknown-linux-gnu)	37s
Test (nvptx64-nvidia-cuda)	26s
Test (thumbv6m-none-eabi)	11s
Test (thumbv7m-none-eabi)	14s
Test (thumbv7em-none-eabi)	13s
Test (thumbv7em-none-eabihf)	16s
Test (x86_64-apple-darwin)	44s
Test (aarch64-apple-darwin)	47s
Test (x86_64-pc-windows-msvc)	38s
Test (i686-pc-windows-msvc)	42s
Test (aarch64-pc-windows-msvc)	41s
Test (x86_64-pc-windows-gnu)	38s
success	1s
	16m 0s

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