Index: contrib/contribs/LundPlane/trunk/SecondaryLund.cc
===================================================================
--- contrib/contribs/LundPlane/trunk/SecondaryLund.cc	(revision 1304)
+++ contrib/contribs/LundPlane/trunk/SecondaryLund.cc	(revision 1305)
@@ -1,124 +1,124 @@
 // $Id$
 //
 // Copyright (c) 2018-, Frederic A. Dreyer, Keith Hamilton, Alexander Karlberg,
 // Gavin P. Salam, Ludovic Scyboz, Gregory Soyez, Rob Verheyen
 //
 //----------------------------------------------------------------------
 // This file is part of FastJet contrib.
 //
 // It is free software; you can redistribute it and/or modify it under
 // the terms of the GNU General Public License as published by the
 // Free Software Foundation; either version 2 of the License, or (at
 // your option) any later version.
 //
 // It is distributed in the hope that it will be useful, but WITHOUT
 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 // or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
 // License for more details.
 //
 // You should have received a copy of the GNU General Public License
 // along with this code. If not, see <http://www.gnu.org/licenses/>.
 //----------------------------------------------------------------------
 
 #include "SecondaryLund.hh"
 #include <math.h>
 #include <sstream>
 #include <limits>
 
 
 FASTJET_BEGIN_NAMESPACE      // defined in fastjet/internal/base.hh
 
 namespace contrib{
 
 //----------------------------------------------------------------------
 /// retrieve the vector of declusterings of the secondary plane of a jet
 int SecondaryLund_mMDT::result(const std::vector<LundDeclustering>& declusts) const {
   // iterate through primary branchings
-  for (int i=0; i < declusts.size(); ++i) {
+  for (unsigned int i=0; i < declusts.size(); ++i) {
     // mMDTZ: find the first emission passing z>zcut
     if (declusts[i].z() > zcut_) return i;
   }
   return -1;
 }
 
 int SecondaryLund_dotmMDT::result(const std::vector<LundDeclustering>& declusts) const {
   // set up leading emission pointer and bookkeeping variables
   int secondary_index  = -1;
   double dot_prod_max   = 0.0;
   
   // iterate through primary branchings
-  for (int i=0; i < declusts.size(); ++i) {
+  for (unsigned int i=0; i < declusts.size(); ++i) {
     // dotmMDTZ: find emission passing z>zcut with largest dot product
     if (declusts[i].z() > zcut_) {
       double dot_prod = declusts[i].harder().pt()*declusts[i].softer().pt()
 	*declusts[i].Delta()*declusts[i].Delta();
       if (dot_prod > dot_prod_max) {
 	dot_prod_max    = dot_prod;
 	secondary_index = i;
       }
     }
   }
   
   // return index of secondary emission
   return secondary_index;
 }
 
 
 int SecondaryLund_Mass::result(const std::vector<LundDeclustering>& declusts) const {
   // set up leading emission pointer and bookkeeping variables
   int secondary_index  = -1;
   double mass_diff     = std::numeric_limits<double>::max();
   
   // iterate through primary branchings
-  for (int i=0; i < declusts.size(); ++i) {
+  for (unsigned int i=0; i < declusts.size(); ++i) {
     // Mass: find emission that minimises the distance to reference mass
     double dist =
       std::abs(log(declusts[i].harder().pt()*declusts[i].softer().pt()
 		   * declusts[i].Delta()*declusts[i].Delta() / mref2_)
 	       * log(1.0/declusts[i].z()));
     if (dist < mass_diff) {
       mass_diff     = dist;
       secondary_index = i;
     }
   }
   
   // return index of secondary emission
   return secondary_index;
 }
 
 
 //----------------------------------------------------------------------
 /// description
 std::string SecondaryLund::description() const {
   std::ostringstream oss;
   oss << "SecondaryLund";
   return oss.str();
 }
 
 //----------------------------------------------------------------------
 /// description
 std::string SecondaryLund_mMDT::description() const {
   std::ostringstream oss;
   oss << "SecondaryLund (mMDT selection of leading emission, zcut=" << zcut_<<")";
   return oss.str();
 }
 
 //----------------------------------------------------------------------
 /// description
 std::string SecondaryLund_dotmMDT::description() const {
   std::ostringstream oss;
   oss << "SecondaryLund (dotmMDT selection of leading emission, zcut=" << zcut_<<")";
   return oss.str();
 }
 
 //----------------------------------------------------------------------
 /// description
 std::string SecondaryLund_Mass::description() const {
   std::ostringstream oss;
   oss << " (Mass selection of leading emission, m="<<sqrt(mref2_)<<")";
   return oss.str();
 }
 
 } // namespace contrib
 
 FASTJET_END_NAMESPACE