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Location: CSY/reowolf/src/random.rs - annotation
7e5f19869dd2
965 B
application/rls-services+xml
Remove distinction between primitive/composite
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* random.rs
*
* Simple wrapper over a random number generator. Put here so that we can have
* a feature flag for particular forms of randomness. For now we'll use pseudo-
* randomness since that will help debugging.
*/
use rand::{RngCore, SeedableRng};
use rand_pcg;
pub(crate) struct Random {
rng: rand_pcg::Lcg64Xsh32,
}
impl Random {
pub(crate) fn new() -> Self {
use std::time::SystemTime;
let now = SystemTime::now();
let elapsed = match now.duration_since(SystemTime::UNIX_EPOCH) {
Ok(elapsed) => elapsed,
Err(err) => err.duration(),
};
let elapsed = elapsed.as_nanos();
let seed = elapsed.to_le_bytes();
return Self::new_seeded(seed);
}
pub(crate) fn new_seeded(seed: [u8; 16]) -> Self {
return Self{ rng: rand_pcg::Pcg32::from_seed(seed) }
}
pub(crate) fn get_u64(&mut self) -> u64 {
return self.rng.next_u64();
}
}
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