From d6356da39380ab36db699cf5cc4ac0b487280a9b Mon Sep 17 00:00:00 2001
From: Magnus Ulimoen <magnus@ulimoen.dev>
Date: Wed, 18 Aug 2021 10:32:29 +0000
Subject: [PATCH] Swap solutions to propagate the solution

---
 multigrid/src/system.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/multigrid/src/system.rs b/multigrid/src/system.rs
index 3f65b7b..1ba6bd1 100644
--- a/multigrid/src/system.rs
+++ b/multigrid/src/system.rs
@@ -1123,7 +1123,8 @@ impl DistributedSystemPart {
                 &mut self.t,
                 self.dt,
                 &mut self.k,
-            )
+            );
+            std::mem::swap(&mut self.current, &mut self.fut);
         }
     }