Add more element-wise math functions for floats #456

Job	Run time
Pass MSRV values to other jobs	3s
nostd/thumbv6m-none-eabi/stable	13s
clippy/stable	23s
format/nightly	18s
docs/nightly	23s
miri	8m 49s
cargo-careful	2m 20s
cross_test/s390x-unknown-linux-gnu/stable	7m 24s
cross_test/i686-unknown-linux-gnu/stable	2m 25s
blas-msrv	1m 5s
tests/stable	2m 57s
tests/1.64.0	6m 6s
tests/nightly	3m 13s
tests/beta	3m 1s
conclusion	2s
	38m 42s

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