From 39579d21c8660dda50f9306afa9ef460f76bea1b Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Fri, 12 Jan 2024 18:40:30 -0500
Subject: [PATCH] correct factor 2 force error for m=1 in angle style
 cosine/periodic

---
 src/OPENMP/angle_cosine_periodic_omp.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/OPENMP/angle_cosine_periodic_omp.cpp b/src/OPENMP/angle_cosine_periodic_omp.cpp
index 43b3a54a47..48532c8f6c 100644
--- a/src/OPENMP/angle_cosine_periodic_omp.cpp
+++ b/src/OPENMP/angle_cosine_periodic_omp.cpp
@@ -140,7 +140,7 @@ void AngleCosinePeriodicOMP::eval(int nfrom, int nto, ThrData * const thr)
     tn = 1.0;
     tn_1 = 1.0;
     tn_2 = 0.0;
-    un = 1.0;
+    un = (m==1) ? 2.0 : 1.0;
     un_1 = 2.0;
     un_2 = 0.0;