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1 // Matrix manipulations. |
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2 /* |
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3 |
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4 Copyright (C) 1996, 1997 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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21 02110-1301, USA. |
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22 |
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23 */ |
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24 |
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25 #ifdef HAVE_CONFIG_H |
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26 #include <config.h> |
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27 #endif |
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28 |
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29 #include <iostream> |
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30 |
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31 #include "Array-util.h" |
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32 #include "lo-error.h" |
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33 #include "str-vec.h" |
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34 #include "mx-base.h" |
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35 #include "mx-inlines.cc" |
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36 |
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37 // boolMatrix class. |
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38 |
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39 bool |
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40 boolMatrix::operator == (const boolMatrix& a) const |
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41 { |
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42 if (rows () != a.rows () || cols () != a.cols ()) |
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43 return 0; |
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44 |
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45 return mx_inline_equal (data (), a.data (), length ()); |
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46 } |
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47 |
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48 bool |
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49 boolMatrix::operator != (const boolMatrix& a) const |
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50 { |
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51 return !(*this == a); |
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52 } |
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53 |
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54 boolMatrix& |
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55 boolMatrix::insert (const boolMatrix& a, octave_idx_type r, octave_idx_type c) |
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56 { |
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57 Array2<bool>::insert (a, r, c); |
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58 return *this; |
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59 } |
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60 |
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61 // unary operations |
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62 |
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63 boolMatrix |
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64 boolMatrix::operator ! (void) const |
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65 { |
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66 octave_idx_type nr = rows (); |
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67 octave_idx_type nc = cols (); |
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68 |
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69 boolMatrix b (nr, nc); |
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70 |
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71 for (octave_idx_type j = 0; j < nc; j++) |
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72 for (octave_idx_type i = 0; i < nr; i++) |
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73 b.elem (i, j) = ! elem (i, j); |
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74 |
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75 return b; |
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76 } |
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77 |
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78 // other operations |
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79 |
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80 boolMatrix |
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81 boolMatrix::diag (void) const |
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82 { |
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83 return diag (0); |
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84 } |
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85 |
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86 boolMatrix |
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87 boolMatrix::diag (octave_idx_type k) const |
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88 { |
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89 octave_idx_type nnr = rows (); |
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90 octave_idx_type nnc = cols (); |
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91 if (k > 0) |
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92 nnc -= k; |
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93 else if (k < 0) |
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94 nnr += k; |
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95 |
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96 boolMatrix d; |
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97 |
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98 if (nnr > 0 && nnc > 0) |
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99 { |
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100 octave_idx_type ndiag = (nnr < nnc) ? nnr : nnc; |
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101 |
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102 d.resize (ndiag, 1); |
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103 |
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104 if (k > 0) |
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105 { |
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106 for (octave_idx_type i = 0; i < ndiag; i++) |
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107 d.xelem (i) = elem (i, i+k); |
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108 } |
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109 else if (k < 0) |
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110 { |
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111 for (octave_idx_type i = 0; i < ndiag; i++) |
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112 d.xelem (i) = elem (i-k, i); |
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113 } |
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114 else |
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115 { |
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116 for (octave_idx_type i = 0; i < ndiag; i++) |
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117 d.xelem (i) = elem (i, i); |
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118 } |
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119 } |
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120 else |
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121 (*current_liboctave_error_handler) |
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122 ("diag: requested diagonal out of range"); |
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123 |
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124 return d; |
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125 } |
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126 |
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127 // FIXME Do these really belong here? Maybe they should be |
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128 // in a base class? |
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129 |
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130 boolMatrix |
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131 boolMatrix::all (int dim) const |
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132 { |
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133 MX_ALL_OP (dim); |
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134 } |
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135 |
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136 boolMatrix |
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137 boolMatrix::any (int dim) const |
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138 { |
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139 MX_ANY_OP (dim); |
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140 } |
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141 |
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142 MM_CMP_OPS (boolMatrix, , boolMatrix, ) |
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143 |
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144 /* |
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145 ;;; Local Variables: *** |
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146 ;;; mode: C++ *** |
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147 ;;; End: *** |
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148 */ |
