G4Fcn.cc

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// $Id:$

// Author: Ivana Hrivnacova, 22/08/2013  (ivana@ipno.in2p3.fr)

#include "G4Fcn.hh"

namespace G4Analysis
{

//_____________________________________________________________________________
G4Fcn GetFunction(const G4String& fcnName)
{
  G4Fcn fcn = G4FcnIdentity;
   if ( fcnName != "none" ) {
    if      ( fcnName == "log" )  fcn = std::log;
    else if ( fcnName == "log10") fcn = std::log10;
    else if ( fcnName == "exp" )  fcn = std::exp;
    else {
      G4ExceptionDescription description;
      description 
        << "    \"" << fcnName << "\" function is not supported." << G4endl
        << "    " << "No function will be applied to histogram values.";
      G4Exception("G4Analysis::GetFunction",
                "Analysis_W013", JustWarning, description);
    }              
  }
  return fcn;            
}
    
}