4 releases (breaking)
0.4.0 | Sep 8, 2024 |
---|---|
0.3.0 | Aug 19, 2024 |
0.2.0 | Aug 17, 2024 |
0.1.0 | Aug 15, 2024 |
#1794 in Algorithms
194 downloads per month
20KB
298 lines
Xorwow Generators
Several implementations of the Xorwow generator as proposed here:
https://www.jstatsoft.org/article/view/v008i14
Implements the SeedableRng
and RngCore
traits from rand_core
, so the crate may be used to create various kinds of pseudorandom number sequences.
Examples
Get a few pseudorandom u32
integers:
use rand_core::{SeedableRng, RngCore}; // version = "0.6.4"
use xorwowgen::Xorwow160;
fn main() {
// initialize the pseudorandom number generator
let mut rng = Xorwow160::seed_from_u64(123456789);
// clock it a few times
for _ in 0..100 {
rng.next_u32();
}
// generate a few numbers
for _ in 0..10 {
println!("{}", rng.next_u32());
}
}
Shuffle mutable array:
use xorwowgen::xorwow64::WrapA;
use rand::SeedableRng; // version = "0.8.5"
use rand::seq::SliceRandom;
fn main() {
// initialize with true random bytes
let mut rng = WrapA::from_entropy();
let mut my_data = ["foo", "bar", "baz", "qux"];
// shuffle data and print the result
my_data.shuffle(&mut rng);
println!("{:?}", &my_data);
// shuffle again ...
my_data.shuffle(&mut rng);
println!("{:?}", &my_data);
}
Notes
-
The generators in this crate are not suitable for any kind of cryptographical use.
-
If you need more functionality than just generating
u32
oru64
integers, I highly recommend to have a look at the rand book. As mentioned above,SeedableRng
andRngCore
are implemented.
Dependencies
~87–425KB