Make StdRng wrap Hc128Rng

src/lib.rs

@@ -270,7 +270,6 @@ pub use distributions::{Distribution, Default, Rand};
 #[cfg(feature="std")]
 pub use thread_local::{ThreadRng, thread_rng, random, random_with};
 
-use prng::IsaacWordRng;
 use distributions::range::Range;
 
 /// Copied from `arrayref` crate
@@ -459,7 +458,7 @@ impl<R: Rng+?Sized> Sample for R {
 /// not support `SeedableRng`.
 #[derive(Clone, Debug)]
 pub struct StdRng {
-    rng: IsaacWordRng,
+    rng: prng::Hc128Rng,
 }
 
 impl Rng for StdRng {
@@ -483,7 +482,7 @@ impl Rng for StdRng {
 
 impl SeedFromRng for StdRng {
     fn from_rng<R: Rng>(other: R) -> Result<Self, Error> {
-        IsaacWordRng::from_rng(other).map(|rng| StdRng{ rng })
+        prng::Hc128Rng::from_rng(other).map(|rng| StdRng{ rng })
     }
 }