First round of fixing Clang compiler and linker problems

DDCore/src/parsers/ExpressionEvaluator.cpp

-// $Id$
-//==========================================================================
-//  AIDA Detector description implementation for LCD
-//--------------------------------------------------------------------------
-// Copyright (C) Organisation europeenne pour la Recherche nucleaire (CERN)
-// All rights reserved.
-//
-// For the licensing terms see $DD4hepINSTALL/LICENSE.
-// For the list of contributors see $DD4hepINSTALL/doc/CREDITS.
-//
-// Author     : M.Frank
-//
-//==========================================================================
-
-#include "XML/Evaluator.h"
-#include "DD4hep/DD4hepUnits.h"
-
-
-namespace {
-  void _init(XmlTools::Evaluator& e) {
-    // Initialize numerical expressions parser with the standard math functions
-    // and the system of units used by Gaudi (Geant4)
-    e.setStdMath();
-  }
-  void _cgsUnits(XmlTools::Evaluator& e) {
-    // ===================================================================================
-    // CGS units
-    e.setSystemOfUnits(100., 1000., 1.0, 1.0, 1.0, 1.0, 1.0);
-  }
-  void _tgeoUnits(XmlTools::Evaluator& e) {
-    // ===================================================================================
-    // DDG4 units (TGeo) 1 sec = 10^9 [nsec]
-    //                   1 Coulomb = 1/e As
-    // Ampere = C/s = 1/e * As / s = 1. / 1.60217733e-19
-    // kilogram = joule*s*s/(m*m)          1/e_SI * 1 *1 / 1e2 / 1e2
-
-    //    e.setSystemOfUnits(1.e+2, 1./1.60217733e-6, 1.0, 1./1.60217733e-19, 1.0, 1.0, 1.0);
-    // use the units as defined in DD4hepUnits.h:
-    e.setSystemOfUnits( dd4hep::meter,
-                        dd4hep::kilogram,
-                        dd4hep::second,
-                        dd4hep::ampere,
-                        dd4hep::kelvin,
-                        dd4hep::mole,
-                        dd4hep::candela,
-                        dd4hep::rad );
-  }
-  void _g4Units(XmlTools::Evaluator& e) {
-    // ===================================================================================
-    // Geant4 units
-    // Geant4:  kilogram = joule*s*s/(m*m) 1/e_SI * 1e-6 * 1e9 1e9 / 1e3 / 1e3 = 1. / 1.60217733e-25
-    e.setSystemOfUnits(1.e+3, 1./1.60217733e-25, 1.e+9, 1./1.60217733e-10, 1.0, 1.0, 1.0);
-  }
-}
-
-namespace DD4hep {
-  XmlTools::Evaluator& evaluator() {
-    static XmlTools::Evaluator* e = 0;
-    if ( !e )   {
-      static XmlTools::Evaluator ev;
-      _init(ev);
-      _tgeoUnits(ev);
-      e = &ev;
-    }
-    return *e;
-  }
-
-  /// Access to G4 evaluator. Note: Uses Geant4 units!
-  XmlTools::Evaluator& g4Evaluator()   {
-    static XmlTools::Evaluator* e = 0;
-    if ( !e )   {
-      static XmlTools::Evaluator ev;
-      _init(ev);
-      _g4Units(ev);
-      e = &ev;
-    }
-    return *e;
-  }
-
-  /// Access to G4 evaluator. Note: Uses cgs units!
-  XmlTools::Evaluator& cgsEvaluator()   {
-    static XmlTools::Evaluator* e = 0;
-    if ( !e )   {
-      static XmlTools::Evaluator ev;
-      _init(ev);
-      _cgsUnits(ev);
-      e = &ev;
-    }
-    return *e;
-  }
-}
-