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// -*- C++ -*-
//
// This file is part of HepMC
// Copyright (C) 2014-2019 The HepMC collaboration (see AUTHORS for details)
//
/**
* @example hepevt_wrapper_example_main.cc
* @brief Basic example of HEPEVT interface use
*
* Fills HEPEVT twice - once using FORTRAN and second time using C++
* Tests that both times printouts from FORTRAN and C++ match
*
* Note that HEPEVT_Wrapper.h file is a standalone header file
* and can be copied over to user directory. No linking to HepMC library
* is needed to use this wrapper.
*/
/* These two define statements can be used to change HEPEVT definition.
They must be defined before including HepMC/HEPEVT_Wrapper.h
For this test, if these values were to be changed, the same changes
must be included in FORTRAN code
NOTE: default is NMXHEP=10000 and double precision */
//#define HEPMC3_HEPEVT_NMXHEP 4000
//#define HEPMC3_HEPEVT_PRECISION float
#include "HepMC3/HEPEVT_Wrapper.h"
#include <iostream>
using namespace HepMC3;
extern "C" void simple_tau_hepevt_event_(); //!< Forward declaration of function defined in hepevt_wrapper_example_fortran.f
extern "C" void phodmp_(); //!< Forward declaration of function defined in hepevt_wrapper_example_fortran.f
extern "C" struct HEPEVT hepevt_; //!< Forward declaration of fortran block pointer
/** @brief Add single particle to HEPEVT event */
void add_particle(int id, int status, double px, double py, double pz, double e, double m,
int mother1, int mother2, int daughter1, int daughter2) {
int idx = HEPEVT_Wrapper::number_entries()+1;
HEPEVT_Wrapper::set_number_entries(idx);
HEPEVT_Wrapper::set_status(idx, status);
HEPEVT_Wrapper::set_id(idx, id);
HEPEVT_Wrapper::set_parents(idx, mother1, mother2);
HEPEVT_Wrapper::set_children(idx, daughter1, daughter2);
HEPEVT_Wrapper::set_momentum(idx, px, py, pz ,e);
HEPEVT_Wrapper::set_mass(idx, m);
}
/**
* @brief Create simple e+ e- -> Z -> tau+ tau- event
*
* In this example we will place the following event into HEPEVT "by hand"
*
* 0 Particle Parameters
* 0 Nr Type Parent(s) Daughter(s) Px Py Pz E Inv. M.
* 1 11 0 3 - 3 0.00 -0.00 45.52 45.52 0.00
* 2 -11 0 3 - 3 -0.00 0.00 -45.58 45.58 0.00
* 3 23 1 - 2 4 - 5 0.00 0.00 -0.06 91.11 91.11
* 4 15 3 6 - 7 -23.19 -26.31 -29.05 45.57 1.78
* 5 -15 3 8 - 9 23.19 26.31 28.98 45.53 1.78
* 6 16 4 Stable -1.26 -1.80 -1.38 2.59 0.01
* 7 -211 4 Stable -21.94 -24.51 -27.67 42.98 0.14
* 8 -16 5 Stable 8.44 8.32 9.62 15.26 0.01
* 9 211 5 Stable 14.76 17.99 19.36 30.27 0.14
* 0 Vector Sum: 0.00 0.00 -0.06 91.11 91.11
*/
void simple_tau_hepevt_event_cpp() {
HEPEVT_Wrapper::zero_everything();
HEPEVT_Wrapper::set_event_number(1);
add_particle( 11, 6, 1.7763568394002505e-15, -3.5565894425761324e-15, 4.5521681043409913e+01, 4.5521681043409934e+01,
0.0005111e0, 0, 0, 3, 3);
add_particle( -11, 6, -1.7763568394002505e-15, 3.5488352204797800e-15, -4.5584999071936601e+01, 4.5584999071936622e+01,
0.0005111e0, 0, 0, 3, 3);
add_particle( 23, 5, 0e0, 0e0, -6.3318028526687442e-02, 9.1106680115346506e+01,
9.1106658112716090e+01, 1, 2, 4, 5);
add_particle( 15, 2, -2.3191595992562256e+01, -2.6310500920665142e+01, -2.9046412466624929e+01, 4.5573504956498098e+01,
1.7769900000002097e+00, 3, 0, 6, 7);
add_particle( -15, 2, 2.3191595992562256e+01, 2.6310500920665142e+01, 2.8983094438098242e+01, 4.5533175158848429e+01,
1.7769900000000818e+00, 3, 0, 8, 9);
add_particle( 16, 1, -1.2566536214715378e+00, -1.7970251138317268e+00, -1.3801323581022720e+00, 2.5910119010468553e+00,
9.9872238934040070e-03, 4, 0, 0, 0);
add_particle(-211, 1, -2.1935073012334062e+01, -2.4513624017269400e+01, -2.7666443730700312e+01, 4.2982749776866747e+01,
1.3956783711910248e-01, 4, 0, 0, 0);
add_particle( -16, 1, 8.4364531743909055e+00, 8.3202830831667836e+00, 9.6202800273055971e+00, 1.5262723881157640e+01,
9.9829332903027534e-03, 5, 0, 0, 0);
add_particle( 211, 1, 1.4755273459419701e+01, 1.7990366047940022e+01, 1.9362977676297948e+01, 3.0270707771933196e+01,
1.3956753909587860e-01, 5, 0, 0, 0);
}
/** Main program */
int main() {
std::cout << std::endl << "HEPEVT wrapper example - FORTRAN EVENT" << std::endl;
std::cout << "--------------------------------------" << std::endl;
HEPEVT_Wrapper::set_hepevt_address((char*)(&hepevt_));
simple_tau_hepevt_event_();
std::cout << std::endl << "FORTRAN PRINTOUT" << std::endl << std::endl;
phodmp_();
std::cout << std::endl << "C++ PRINTOUT" << std::endl << std::endl;
HEPEVT_Wrapper::print_hepevt();
std::cout << std::endl << "HEPEVT wrapper example - C++ EVENT" << std::endl;
std::cout << "----------------------------------" << std::endl;
simple_tau_hepevt_event_cpp();
std::cout << std::endl << "FORTRAN PRINTOUT" << std::endl << std::endl;
phodmp_();
std::cout << std::endl << "C++ PRINTOUT" << std::endl << std::endl;
HEPEVT_Wrapper::print_hepevt();
}
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