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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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_dim_vector_h) |
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24 #define octave_dim_vector_h 1 |
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25 |
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26 #if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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27 #pragma interface |
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28 #endif |
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29 |
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30 #include <cassert> |
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31 |
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32 class |
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33 dim_vector |
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34 { |
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35 public: |
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36 |
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37 dim_vector (void) : ndims (0), dims (0) { } |
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38 |
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39 dim_vector (int n) : ndims (1), dims (new int [1]) { dims[0] = n; } |
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40 |
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41 dim_vector (int r, int c) |
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42 : ndims (2), dims (new int [2]) { dims[0] = r; dims[1] = c; } |
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43 |
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44 dim_vector (int r, int c, int p) |
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45 : ndims (3), dims (new int [3]) { dims[0] = r; dims[1] = c; dims[2] = p; } |
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46 |
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47 dim_vector (const dim_vector& dv) |
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48 : ndims (dv.ndims) |
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49 { |
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50 if (dv.dims) |
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51 { |
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52 dims = new int [ndims]; |
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53 |
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54 for (int i = 0; i < ndims; i++) |
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55 dims[i] = dv.dims[i]; |
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56 } |
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57 else |
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58 dims = 0; |
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59 } |
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60 |
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61 dim_vector& operator = (const dim_vector& dv) |
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62 { |
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63 if (&dv != this) |
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64 { |
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65 ndims = dv.ndims; |
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66 |
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67 if (dv.dims) |
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68 { |
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69 dims = new int [ndims]; |
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70 |
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71 for (int i = 0; i < ndims; i++) |
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72 dims[i] = dv.dims[i]; |
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73 } |
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74 } |
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75 |
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76 return *this; |
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77 } |
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78 |
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79 ~dim_vector (void) { delete [] dims; } |
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80 |
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81 int length (void) const { return ndims; } |
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82 |
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83 int& elem (int i) |
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84 { |
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85 if (i >= ndims) |
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86 resize (i+1); |
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87 |
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88 return dims[i]; |
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89 } |
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90 |
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91 int elem (int i) const { return i < ndims ? dims[i] : -1; } |
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92 |
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93 int& operator () (int i) { return elem (i); } |
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94 |
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95 int operator () (int i) const { return elem (i); } |
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96 |
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97 void resize (int n) |
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98 { |
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99 if (n > ndims) |
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100 { |
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101 int *new_dims = new int [n]; |
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102 |
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103 for (int i = 0; i < ndims; i++) |
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104 new_dims[i] = dims[i]; |
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105 |
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106 for (int i = ndims; i < n; i++) |
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107 new_dims[i] = 0; |
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108 |
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109 delete [] dims; |
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110 |
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111 dims = new_dims; |
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112 |
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113 ndims = n; |
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114 } |
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115 else |
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116 ndims = n; |
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117 } |
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118 |
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119 private: |
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120 |
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121 int ndims; |
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122 int *dims; |
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123 }; |
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124 |
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125 #endif |
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126 |
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127 /* |
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128 ;;; Local Variables: *** |
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129 ;;; mode: C++ *** |
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130 ;;; End: *** |
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131 */ |
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132 |
