From dc80368475ff59b32b3cb5ba65506cc0be357239 Mon Sep 17 00:00:00 2001
From: athomps <athomps@f3b2605a-c512-4ea7-a41b-209d697bcdaa>
Date: Thu, 19 Mar 2009 22:17:39 +0000
Subject: [PATCH] Added check to prevent uphill moves in quadratic model,
 tweaked

git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@2692 f3b2605a-c512-4ea7-a41b-209d697bcdaa
---
 src/min_cg.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/min_cg.cpp b/src/min_cg.cpp
index 7f39e2cae3..e0893692c5 100644
--- a/src/min_cg.cpp
+++ b/src/min_cg.cpp
@@ -825,7 +825,7 @@ int MinCG::linemin_quadratic(int n, double *x, double *dir,
 
       de_ideal = -BACKTRACK_SLOPE*alpha0*fdotdirall;
       de = eng - eoriginal;
-      if (de <= de_ideal) {
+      if (de <= de_ideal || de_ideal >= -IDEAL_TOL) {
 	return 0;
       }