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1 // Copyright (C) 2008-2011 NICTA (www.nicta.com.au)
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2 // Copyright (C) 2008-2011 Conrad Sanderson
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3 //
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4 // This file is part of the Armadillo C++ library.
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5 // It is provided without any warranty of fitness
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6 // for any purpose. You can redistribute this file
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7 // and/or modify it under the terms of the GNU
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8 // Lesser General Public License (LGPL) as published
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9 // by the Free Software Foundation, either version 3
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10 // of the License or (at your option) any later version.
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11 // (see http://www.opensource.org/licenses for more info)
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12
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13
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14 //! \addtogroup fn_randu
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15 //! @{
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16
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17
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18 inline
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19 double
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20 randu()
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21 {
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22 return double(eop_aux_randu<double>());
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23 }
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24
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25
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26 template<typename eT>
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27 inline
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28 typename arma_scalar_only<eT>::result
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29 randu()
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30 {
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31 return eT(eop_aux_randu<eT>());
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32 }
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33
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34
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35
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36 //! Generate a vector with all elements set to random values in the [0,1] interval (uniform distribution)
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37 arma_inline
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38 const Gen<vec::elem_type, gen_randu>
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39 randu(const uword n_elem)
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40 {
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41 arma_extra_debug_sigprint();
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42
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43 return Gen<vec::elem_type, gen_randu>(n_elem, 1);
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44 }
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45
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46
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47
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48 template<typename vec_type>
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49 arma_inline
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50 const Gen<typename vec_type::elem_type, gen_randu>
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51 randu(const uword n_elem, const arma_empty_class junk1 = arma_empty_class(), const typename arma_Mat_Col_Row_only<vec_type>::result* junk2 = 0)
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52 {
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53 arma_extra_debug_sigprint();
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54 arma_ignore(junk1);
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55 arma_ignore(junk2);
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56
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57 if(is_Row<vec_type>::value == true)
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58 {
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59 return Gen<typename vec_type::elem_type, gen_randu>(1, n_elem);
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60 }
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61 else
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62 {
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63 return Gen<typename vec_type::elem_type, gen_randu>(n_elem, 1);
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64 }
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65 }
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66
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67
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68
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69 //! Generate a dense matrix with all elements set to random values in the [0,1] interval (uniform distribution)
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70 arma_inline
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71 const Gen<mat::elem_type, gen_randu>
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72 randu(const uword n_rows, const uword n_cols)
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73 {
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74 arma_extra_debug_sigprint();
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75
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76 return Gen<mat::elem_type, gen_randu>(n_rows, n_cols);
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77 }
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78
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79
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80
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81 template<typename mat_type>
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82 arma_inline
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83 const Gen<typename mat_type::elem_type, gen_randu>
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84 randu(const uword n_rows, const uword n_cols, const typename arma_Mat_Col_Row_only<mat_type>::result* junk = 0)
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85 {
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86 arma_extra_debug_sigprint();
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87 arma_ignore(junk);
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88
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89 return Gen<typename mat_type::elem_type, gen_randu>(n_rows, n_cols);
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90 }
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91
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92
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93
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94 arma_inline
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95 const GenCube<cube::elem_type, gen_randu>
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96 randu(const uword n_rows, const uword n_cols, const uword n_slices)
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97 {
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98 arma_extra_debug_sigprint();
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99
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100 return GenCube<cube::elem_type, gen_randu>(n_rows, n_cols, n_slices);
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101 }
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102
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103
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104
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105 template<typename cube_type>
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106 arma_inline
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107 const GenCube<typename cube_type::elem_type, gen_randu>
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108 randu(const uword n_rows, const uword n_cols, const uword n_slices, const typename arma_Cube_only<cube_type>::result* junk = 0)
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109 {
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110 arma_extra_debug_sigprint();
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111 arma_ignore(junk);
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112
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113 return GenCube<typename cube_type::elem_type, gen_randu>(n_rows, n_cols, n_slices);
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114 }
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115
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116
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117
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118 //! @}
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