From 1bf4753e9a22194adfc757ea287061bc6a4d2694 Mon Sep 17 00:00:00 2001
From: Magnus Ulimoen <flymagnus@gmail.com>
Date: Fri, 8 Nov 2019 21:00:52 +0100
Subject: [PATCH] let minus be closer to block

---
 src/operators/upwind4.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/operators/upwind4.rs b/src/operators/upwind4.rs
index 2dfc9b8..30badee 100644
--- a/src/operators/upwind4.rs
+++ b/src/operators/upwind4.rs
@@ -82,8 +82,8 @@ impl Upwind4 {
 
         let last_elems = prev.slice(s!(nx - 7..;-1));
         for (bl, f) in block.outer_iter().zip(&mut fut.slice_mut(s![nx - 4..;-1])) {
-            let diff = bl.dot(&last_elems);
-            *f += -diff * idx;
+            let diff = -bl.dot(&last_elems);
+            *f += diff * idx;
         }
     }
 }