Exponential.h

Go to the documentation of this file.

#ifndef PhysicsTools_Utilities_Exponential_h
#define PhysicsTools_Utilities_Exponential_h
#include "PhysicsTools/Utilities/interface/Parameter.h"
 
#include <cmath>
 
namespace funct {
 
  struct Exponential {
    Exponential(const Parameter& l) : lambda(l.ptr()) {}
    Exponential(std::shared_ptr<double> l) : lambda(l) {}
    Exponential(double l) : lambda(new double(l)) {}
    double operator()(double x) const { return std::exp((*lambda) * x); }
    std::shared_ptr<double> lambda;
  };
 
}  // namespace funct
 
#endif