From 1d30b115d31df05530b20eb7dd348e21bc1a7711 Mon Sep 17 00:00:00 2001
From: Jaron Kent-Dobias <jaron@kent-dobias.com>
Date: Mon, 30 Jul 2018 09:08:09 -0400
Subject: removed some unnessecary code

---
 lib/state.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'lib/state.h')

diff --git a/lib/state.h b/lib/state.h
index 550d100..3bbed39 100644
--- a/lib/state.h
+++ b/lib/state.h
@@ -58,8 +58,7 @@ class state_t {
     }
 
     void update_magnetization(const X_t& s_old, const X_t& s_new) {
-      M -= s_old;
-      M += s_new;
+      M += s_new - s_old;
     }
 
     void update_energy(const double& dE) {
-- 
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