* rands: use splitmix64 for seeding
Seeding with splitmix64 is a good way to avoid starting with
low-entropy PRNG states, and is explicitly recommended
by the authors of both xoshiro256++ and Romu.
While at it, give the xoshiro256++ PRNG its proper name.
* rands: use fast_bound() to generate number in range
* rands: add top-level choose()
* rands: add Rand::next_float()
* rands: add Rand::coinflip() helper
* libafl: unbreak tests that relied on direct seeding
* rands: add SFC64 PRNG
SFC64 is a well-established and well-understood PRNG designed by
Chris Doty-Humphrey, the author of PractRand. It has been tested
quite a lot over the years, and to date has no known weaknesses.
Compared to xoshiro256++, it is slightly faster and is likely to
be a more future-proof design (xoshiro/xoroshiro family of generators
come with quite long history of [flaws][1] found over the years).
Compared to Romu, it is slightly slower, but guarantees absense
of bias, minimum period of at least 2^64 for any seed, and
non-overlapping streams for different seeds.
[1]: https://tom-kaitchuck.medium.com/designing-a-new-prng-1c4ffd27124d
Reduces total number of packages from 577 to 571 on building with:
`cargo +nightly build --workspace --all-features`
* ahash 0.7 -> 0.8
* Move `AHasher::new_with_keys` to `RandomState::with_seeds` given the
recommendation from: aHash maintainer:
https://github.com/tkaitchuck/aHash/issues/132#issuecomment-1288207069
* bindgen: 0.61 -> 0.63
* c2rust-bitfields: 0.3 -> 0.17
* criterion: 0.3 -> 0.4
* crossterm: 0.25 -> 0.26
* dynasmrt: 1.2 -> 2
* goblin: 0.5.3 -> 0.6
* hashbrown: 0.12 -> 0.13
* nix: 0.25 -> 0.26
* The `addr` arg of `mmap` is now of type `Option<NonZeroUsize>`
* The `length` arg of `mmap` is now of type `NonZeroUsize`
* Requires updating implementers to update `nix` as well
* prometheus-client: 0.18.0 -> 0.19
* Do not box metrics
* Gauges (a majority of the LibAFL metrics) are now i64 types so there
is a small chance of overflow, with the u64 values that LibAFL
tracks, but unlikely to be problematic.
* Keep `exec_rate` as a floating point value
* serial_test: 0.8 -> 1
* typed-builder: 0.10.0 -> 0.12
* windows: 0.42.0 -> 0.44
Co-authored-by: Dominik Maier <domenukk@gmail.com>
