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1 /* |
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2 |
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3 Copyright (C) 2003 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_rand_h) |
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25 #define octave_rand_h 1 |
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26 |
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27 #include <string> |
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28 |
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29 #include "dColVector.h" |
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30 #include "dMatrix.h" |
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31 #include "dNDArray.h" |
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32 |
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33 struct |
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34 octave_rand |
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35 { |
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36 // Return the current seed. |
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37 static double seed (void); |
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38 |
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39 // Set the seed. |
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40 static void seed (double s); |
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41 |
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42 // Return the current state. |
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43 static ColumnVector state (void); |
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44 |
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45 // Set the current state/ |
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46 static void state (const ColumnVector &s); |
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47 |
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48 // Return the current distribution. |
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49 static std::string distribution (void); |
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50 |
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51 // Set the current distribution. May be either "uniform" (the |
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52 // default) or "normal". |
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53 static void distribution (const std::string& d); |
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54 |
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55 static void uniform_distribution (void); |
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56 |
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57 static void normal_distribution (void); |
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58 |
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59 static void exponential_distribution (void); |
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60 |
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61 static void poisson_distribution (void); |
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62 |
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63 static void gamma_distribution (void); |
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64 |
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65 // Return the next number from the sequence. |
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66 static double scalar (double a = 1.); |
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67 |
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68 // Return a matrix of numbers from the sequence, filled in column |
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69 // major order. |
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70 static Matrix matrix (octave_idx_type r, octave_idx_type c, double a = 1.); |
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71 |
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72 // Return an N-dimensional array of numbers from the sequence, |
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73 // filled in column major order. |
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74 static NDArray nd_array (const dim_vector& dims, double a = 1.); |
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75 |
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76 // Return an array of numbers from the sequence. |
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77 static Array<double> vector (octave_idx_type n, double a = 1.); |
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78 }; |
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79 |
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80 #endif |
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81 |
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82 /* |
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83 ;;; Local Variables: *** |
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84 ;;; mode: C++ *** |
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85 ;;; End: *** |
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86 */ |
