| Geant4 Cross Reference |
1 // -*- C++ -*-
2 //
3 // ------------------------------------------------------------------------
4 // HEP Random
5 // --- HepRandomEngine ---
6 // class implementation file
7 // ------------------------------------------------------------------------
8 // This file is part of Geant4 (simulation toolkit for HEP).
9
10 // ========================================================================
11 // Gabriele Cosmo - Created: 5th September 1995
12 // - Minor corrections: 31st October 1996
13 // - Moved table of seeds to HepRandom: 19th March 1998
14 // Ken Smith - Added conversion operators: 6th Aug 1998
15 // =======================================================================
16
17 #include "CLHEP/Random/RandomEngine.h"
18 #include "CLHEP/Random/EngineFactory.h"
19
20 #include <iostream>
21 #include <vector>
22
23 //------------------------- HepRandomEngine ------------------------------
24
25 namespace CLHEP {
26
27 HepRandomEngine::HepRandomEngine()
28 : theSeed (19780503L)
29 , theSeeds(&theSeed)
30 { }
31
32 HepRandomEngine::~HepRandomEngine() {}
33
34 HepRandomEngine::operator double() {
35 return flat();
36 }
37
38 HepRandomEngine::operator float() {
39 return float( flat() );
40 }
41
42 HepRandomEngine::operator unsigned int() {
43 return (unsigned int)( flat() * exponent_bit_32() );
44 }
45
46 bool
47 HepRandomEngine::checkFile (std::istream & file,
48 const std::string & filename,
49 const std::string & classname,
50 const std::string & methodname) {
51 if (!file) {
52 std::cerr << "Failure to find or open file " << filename <<
53 " in " << classname << "::" << methodname << "()\n";
54 return false;
55 }
56 return true;
57 }
58
59 std::ostream & HepRandomEngine::put (std::ostream & os) const {
60 std::cerr << "HepRandomEngine::put called -- no effect!\n";
61 return os;
62 }
63 std::istream & HepRandomEngine::get (std::istream & is) {
64 std::cerr << "HepRandomEngine::get called -- no effect!\n";
65 return is;
66 }
67
68 std::string HepRandomEngine::beginTag ( ) {
69 return "HepRandomEngine-begin";
70 }
71
72 std::istream & HepRandomEngine::getState ( std::istream & is ) {
73 std::cerr << "HepRandomEngine::getState called -- no effect!\n";
74 return is;
75 }
76
77 std::vector<unsigned long> HepRandomEngine::put () const {
78 std::cerr << "v=HepRandomEngine::put() called -- no data!\n";
79 std::vector<unsigned long> v;
80 return v;
81 }
82 bool HepRandomEngine::get (const std::vector<unsigned long> & ) {
83 std::cerr << "HepRandomEngine::get(v) called -- no effect!\n";
84 return false;
85 }
86 bool HepRandomEngine::getState (const std::vector<unsigned long> & ) {
87 std::cerr << "HepRandomEngine::getState(v) called -- no effect!\n";
88 return false;
89 }
90
91 HepRandomEngine* HepRandomEngine::newEngine(std::istream& is) {
92 return EngineFactory::newEngine(is);
93 }
94
95 HepRandomEngine*
96 HepRandomEngine::newEngine(const std::vector<unsigned long> & v) {
97 return EngineFactory::newEngine(v);
98 }
99
100 std::ostream & operator<< (std::ostream & os, const HepRandomEngine & e) {
101 return e.put(os);
102 }
103
104 std::istream & operator>> (std::istream & is, HepRandomEngine & e) {
105 return e.get(is);
106 }
107
108
109 } // namespace CLHEP
110