Implement float math functions for two arrays #486

Job	Run time
clippy/stable	23s
Pass MSRV values to other jobs	2s
nostd/thumbv6m-none-eabi/stable	22s
miri	7m 0s
format/nightly	17s
cargo-careful	2m 6s
cross_test/i686-unknown-linux-gnu/stable	1m 32s
cross_test/s390x-unknown-linux-gnu/stable	7m 20s
docs/nightly	22s
blas-msrv	45s
tests/beta	2m 9s
tests/1.64.0	1m 54s
tests/nightly	2m 9s
tests/stable	2m 8s
conclusion	2s
	28m 31s

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