Mercurial > octave
annotate liboctave/oct-rand.h @ 7533:ff52243af934
save state separately for each MT random number generator
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 26 Feb 2008 05:28:59 -0500 |
| parents | a1dbe9d80eee |
| children | a2950622f070 72830070a17b |
| rev | line source |
|---|---|
| 4308 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 2003, 2005, 2006, 2007 John W. Eaton |
| 4308 | 4 |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
| 10 option) any later version. | |
| 4308 | 11 |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 7016 | 18 along with Octave; see the file COPYING. If not, see |
| 19 <http://www.gnu.org/licenses/>. | |
| 4308 | 20 |
| 21 */ | |
| 22 | |
| 23 #if !defined (octave_rand_h) | |
| 24 #define octave_rand_h 1 | |
| 25 | |
| 26 #include <string> | |
| 27 | |
| 5730 | 28 #include "dColVector.h" |
| 4308 | 29 #include "dMatrix.h" |
| 4543 | 30 #include "dNDArray.h" |
| 4308 | 31 |
| 32 struct | |
| 6108 | 33 OCTAVE_API |
| 4308 | 34 octave_rand |
| 35 { | |
| 36 // Return the current seed. | |
| 37 static double seed (void); | |
| 38 | |
| 39 // Set the seed. | |
| 40 static void seed (double s); | |
| 41 | |
| 5730 | 42 // Return the current state. |
|
7533
ff52243af934
save state separately for each MT random number generator
John W. Eaton <jwe@octave.org>
parents:
7017
diff
changeset
|
43 static ColumnVector state (const std::string& d = std::string ()); |
| 5730 | 44 |
| 45 // Set the current state/ | |
|
7533
ff52243af934
save state separately for each MT random number generator
John W. Eaton <jwe@octave.org>
parents:
7017
diff
changeset
|
46 static void state (const ColumnVector &s, |
|
ff52243af934
save state separately for each MT random number generator
John W. Eaton <jwe@octave.org>
parents:
7017
diff
changeset
|
47 const std::string& d = std::string ()); |
| 5730 | 48 |
| 4308 | 49 // Return the current distribution. |
| 50 static std::string distribution (void); | |
| 51 | |
| 52 // Set the current distribution. May be either "uniform" (the | |
|
7533
ff52243af934
save state separately for each MT random number generator
John W. Eaton <jwe@octave.org>
parents:
7017
diff
changeset
|
53 // default), "normal", "exponential", "poisson", or "gamma". |
| 4308 | 54 static void distribution (const std::string& d); |
| 55 | |
| 56 static void uniform_distribution (void); | |
| 57 | |
| 58 static void normal_distribution (void); | |
| 59 | |
| 5730 | 60 static void exponential_distribution (void); |
| 61 | |
| 62 static void poisson_distribution (void); | |
| 63 | |
| 64 static void gamma_distribution (void); | |
| 65 | |
| 4308 | 66 // Return the next number from the sequence. |
| 5730 | 67 static double scalar (double a = 1.); |
| 4308 | 68 |
| 69 // Return a matrix of numbers from the sequence, filled in column | |
| 70 // major order. | |
| 5730 | 71 static Matrix matrix (octave_idx_type r, octave_idx_type c, double a = 1.); |
| 4308 | 72 |
| 4543 | 73 // Return an N-dimensional array of numbers from the sequence, |
| 74 // filled in column major order. | |
| 5730 | 75 static NDArray nd_array (const dim_vector& dims, double a = 1.); |
| 4543 | 76 |
| 4308 | 77 // Return an array of numbers from the sequence. |
| 5730 | 78 static Array<double> vector (octave_idx_type n, double a = 1.); |
| 4308 | 79 }; |
| 80 | |
| 81 #endif | |
| 82 | |
| 83 /* | |
| 84 ;;; Local Variables: *** | |
| 85 ;;; mode: C++ *** | |
| 86 ;;; End: *** | |
| 87 */ |