| 1 | //
|
|---|
| 2 | // ********************************************************************
|
|---|
| 3 | // * License and Disclaimer *
|
|---|
| 4 | // * *
|
|---|
| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
|
|---|
| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
|
|---|
| 7 | // * conditions of the Geant4 Software License, included in the file *
|
|---|
| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
|
|---|
| 9 | // * include a list of copyright holders. *
|
|---|
| 10 | // * *
|
|---|
| 11 | // * Neither the authors of this software system, nor their employing *
|
|---|
| 12 | // * institutes,nor the agencies providing financial support for this *
|
|---|
| 13 | // * work make any representation or warranty, express or implied, *
|
|---|
| 14 | // * regarding this software system or assume any liability for its *
|
|---|
| 15 | // * use. Please see the license in the file LICENSE and URL above *
|
|---|
| 16 | // * for the full disclaimer and the limitation of liability. *
|
|---|
| 17 | // * *
|
|---|
| 18 | // * This code implementation is the result of the scientific and *
|
|---|
| 19 | // * technical work of the GEANT4 collaboration. *
|
|---|
| 20 | // * By using, copying, modifying or distributing the software (or *
|
|---|
| 21 | // * any work based on the software) you agree to acknowledge its *
|
|---|
| 22 | // * use in resulting scientific publications, and indicate your *
|
|---|
| 23 | // * acceptance of all terms of the Geant4 Software license. *
|
|---|
| 24 | // ********************************************************************
|
|---|
| 25 | //
|
|---|
| 26 | //
|
|---|
| 27 | // $Id: G4ShootBitTest.cc,v 1.7 2006/06/29 19:00:58 gunter Exp $
|
|---|
| 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $
|
|---|
| 29 | //
|
|---|
| 30 | //
|
|---|
| 31 |
|
|---|
| 32 | // Tests RandFlat::fireBit() member function
|
|---|
| 33 | // Peter Urban, 5th Sep 1996
|
|---|
| 34 |
|
|---|
| 35 | #include "G4ios.hh"
|
|---|
| 36 | #include <iomanip>
|
|---|
| 37 | #include "Randomize.hh"
|
|---|
| 38 | #include "G4Timer.hh"
|
|---|
| 39 |
|
|---|
| 40 | int main()
|
|---|
| 41 | {
|
|---|
| 42 | HepRandomEngine* e= HepRandom::getTheEngine();
|
|---|
| 43 | RandFlat r(*e);
|
|---|
| 44 |
|
|---|
| 45 | const long NumTest= 10000;
|
|---|
| 46 |
|
|---|
| 47 | G4cout << "Printed value: (relative frequency - probability)" << G4endl;
|
|---|
| 48 | G4cout << NumTest << " random numbers" << G4endl << G4endl;
|
|---|
| 49 |
|
|---|
| 50 | long sum= 0;
|
|---|
| 51 | long i, j;
|
|---|
| 52 |
|
|---|
| 53 | for (i=0; i<NumTest; i++) {
|
|---|
| 54 | sum+= r.fireBit();
|
|---|
| 55 | }
|
|---|
| 56 | G4cout << "fireBit " << double(sum)/NumTest-0.5 << G4endl;
|
|---|
| 57 | sum= 0;
|
|---|
| 58 | for (i=0; i<NumTest; i++) {
|
|---|
| 59 | sum+= r.shootBit();
|
|---|
| 60 | }
|
|---|
| 61 | G4cout << "shootBit " << double(sum)/NumTest-0.5 << G4endl;
|
|---|
| 62 | sum= 0;
|
|---|
| 63 | for (i=0; i<NumTest; i++) {
|
|---|
| 64 | sum+= r.shootBit(e);
|
|---|
| 65 | }
|
|---|
| 66 | G4cout << "shootBit(engine) " << double(sum)/NumTest-0.5 << G4endl;
|
|---|
| 67 |
|
|---|
| 68 |
|
|---|
| 69 | const long Num= 1000000;
|
|---|
| 70 | int iii; long lll;
|
|---|
| 71 |
|
|---|
| 72 | G4Timer theTimer;
|
|---|
| 73 | G4cout << G4endl << "Performance test: " << G4endl;
|
|---|
| 74 |
|
|---|
| 75 | G4cout << "shootBit() vs G4UniformRand()<0.5: ";
|
|---|
| 76 | theTimer.Start();
|
|---|
| 77 | for (i=0; i<Num; i++)
|
|---|
| 78 | iii = RandFlat::shootBit();
|
|---|
| 79 | theTimer.Stop();
|
|---|
| 80 | G4cout << theTimer.GetUserElapsed() << " vs ";
|
|---|
| 81 | theTimer.Start();
|
|---|
| 82 | for (i=0; i<Num; i++)
|
|---|
| 83 | G4UniformRand()<0.5;
|
|---|
| 84 | theTimer.Stop();
|
|---|
| 85 | G4cout << theTimer.GetUserElapsed() << G4endl << G4endl;
|
|---|
| 86 |
|
|---|
| 87 | return 0;
|
|---|
| 88 | }
|
|---|
| 89 |
|
|---|
| 90 |
|
|---|
| 91 |
|
|---|
