From 6c6d6580230421f40d40b5bc665aa2af460f9fc4 Mon Sep 17 00:00:00 2001
From: Pierre Krieger <pierre.krieger1708@gmail.com>
Date: Mon, 10 Oct 2016 14:17:14 +0200
Subject: [PATCH] Add XorShiftRng::extract_seed

---
 src/lib.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 472e4ece331..b56763371d0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -705,6 +705,14 @@ impl XorShiftRng {
             w: w(0x113ba7bb),
         }
     }
+
+    /// Extracts the seed of the XorShiftRng.
+    ///
+    /// This function is useful if you want to store the state of the PRNG somewhere on the disk
+    /// and reload it later.
+    pub fn extract_seed(&self) -> [u32; 4] {
+        [self.x.0, self.y.0, self.z.0, self.w.0]
+    }
 }
 
 impl Rng for XorShiftRng {