source: issm/trunk-jpl/src/c/shared/Random/randomgenerator.h@ 26574

Last change on this file since 26574 was 26574, checked in by bulthuis, 3 years ago

CHG: write pseudrandom number generators as a namespace
  • Property svn:executable set to *
File size: 1.3 KB
Line 
1/*!\file: randomgenerator.h
2 * \brief prototypes for randomgenerator.h
3 */
4
5#ifndef _RANDOMGENERATOR_H_
6#define _RANDOMGENERATOR_H_
7
8namespace rdn
9{
10 class uniform_distribution
11 {
12
13 private:
14
15 unsigned int a; //multiplier of the linear congruential generator
16 unsigned int c; //increment of the linear congruential generator
17 unsigned int m; // modulo of the linear congruential generator
18 unsigned int _seed; // seed value
19 double lbound; // lower bound of uniform distribution
20 double ubound; // upper bound of uniform distribution
21
22 public:
23
24 /*constructors, destructors: */
25 uniform_distribution();
26 uniform_distribution(double a_1, double a_2);
27 ~uniform_distribution();
28
29 void seed( unsigned int s );
30 unsigned int get_seed();
31 double generator();
32
33 };
34
35 class normal_distribution
36 {
37
38 private:
39 unsigned int _seed; // seed value
40 double mean; // mean value
41 double sdev; // standard deviation
42
43 public:
44
45 /*constructors, destructors: */
46 normal_distribution();
47 normal_distribution(double m,double s);
48 ~normal_distribution();
49
50 void seed( unsigned int s );
51 double generator();
52
53 };
54
55
56}
57#endif //ifndef _RANDOMGENERATOR_H_
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