Add `f16`/`f128` support #4016

Job	Run time
rustfmt	14s
bench	6m 58s
test (ubuntu-latest, x86_64-unknown-linux-gnu)	18m 27s
test (macos-latest, aarch64-apple-darwin)	13m 45s
test (ubuntu-24.04-arm, aarch64-unknown-linux-gnu)	9m 54s
test (ubuntu-latest, s390x-unknown-linux-gnu, gcc-s390x-linux-gnu qemu-user)	6m 22s
test (windows-latest, x86_64-pc-windows-gnu)	32m 25s
test (macos-13, x86_64-apple-darwin)	22m 22s
test (ubuntu-latest, riscv64gc-unknown-linux-gnu, gcc-riscv64-linux-gnu qemu-user)	6m 35s
dist (macos-13, x86_64-apple-darwin)	3m 33s
dist (ubuntu-22.04, x86_64-unknown-linux-gnu)	2m 25s
dist (macos-latest, aarch64-apple-darwin)	2m 18s
dist (ubuntu-24.04-arm, aarch64-unknown-linux-gnu)	2m 33s
test_llvm	1m 33s
dist (windows-latest, x86_64-pc-windows-gnu)	4m 27s
test (windows-latest, x86_64-pc-windows-msvc)	25m 28s
dist (windows-latest, x86_64-pc-windows-msvc)	3m 52s
release	0s
	2h 43m 11s

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