diff options
Diffstat (limited to 'rand/rand_xoshiro/src/xoroshiro64star.rs')
-rw-r--r-- | rand/rand_xoshiro/src/xoroshiro64star.rs | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/rand/rand_xoshiro/src/xoroshiro64star.rs b/rand/rand_xoshiro/src/xoroshiro64star.rs index 86338fd..6bb708a 100644 --- a/rand/rand_xoshiro/src/xoroshiro64star.rs +++ b/rand/rand_xoshiro/src/xoroshiro64star.rs @@ -6,7 +6,7 @@ // option. This file may not be copied, modified, or distributed // except according to those terms. -use byteorder::{ByteOrder, LittleEndian}; +#[cfg(feature="serde1")] use serde::{Serialize, Deserialize}; use rand_core; use rand_core::le::read_u32_into; use rand_core::impls::{fill_bytes_via_next, next_u64_via_u32}; @@ -23,6 +23,7 @@ use rand_core::{RngCore, SeedableRng}; /// David Blackman and Sebastiano Vigna. #[allow(missing_copy_implementations)] #[derive(Debug, Clone)] +#[cfg_attr(feature="serde1", derive(Serialize, Deserialize))] pub struct Xoroshiro64Star { s0: u32, s1: u32, @@ -71,9 +72,7 @@ impl SeedableRng for Xoroshiro64Star { /// Seed a `Xoroshiro64Star` from a `u64` using `SplitMix64`. fn seed_from_u64(seed: u64) -> Xoroshiro64Star { - let mut s = [0; 8]; - LittleEndian::write_u64(&mut s, seed); - Xoroshiro64Star::from_seed(s) + from_splitmix!(seed) } } @@ -94,4 +93,10 @@ mod tests { assert_eq!(rng.next_u32(), e); } } + + #[test] + fn zero_seed() { + let mut rng = Xoroshiro64Star::seed_from_u64(0); + assert_ne!(rng.next_u64(), 0); + } } |