From 6e4e17769ef8efe68f5ab5fd7240418d284fac6b Mon Sep 17 00:00:00 2001
From: sjplimp <sjplimp@f3b2605a-c512-4ea7-a41b-209d697bcdaa>
Date: Wed, 26 Feb 2014 15:08:18 +0000
Subject: [PATCH] git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@11576
 f3b2605a-c512-4ea7-a41b-209d697bcdaa

---
 src/fix_vector.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/fix_vector.cpp b/src/fix_vector.cpp
index 7ecd49d049..1f4ba69025 100644
--- a/src/fix_vector.cpp
+++ b/src/fix_vector.cpp
@@ -217,8 +217,13 @@ void FixVector::init()
   }
 
   // reallocate vector or array for size at end of run
+  // nsize = # of entries this run will add
 
-  int nsize = (update->laststep-update->firststep+1) / nevery;
+  bigint nfirst = update->firststep/nevery * nevery;
+  if (nfirst < update->firststep) nfirst += nevery;
+  bigint nlast = update->laststep/nevery * nevery;
+  if (nlast > update->laststep) nlast -= nevery;
+  int nsize = (nlast-nfirst)/nevery + 1;
   if (nvalues == 1) memory->grow(vector,ncount+nsize,"vector:vector");
   else memory->grow(array,ncount+nsize,nvalues,"vector:array");
 }