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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 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 (__GNUG__) |
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24 #pragma implementation |
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25 #endif |
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26 |
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27 #ifdef HAVE_CONFIG_H |
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28 #include <config.h> |
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29 #endif |
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30 |
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31 #include <iostream> |
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32 |
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33 #include "oct-obj.h" |
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34 #include "ov-base.h" |
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35 #include "ov-base-mat.h" |
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36 #include "pr-output.h" |
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37 |
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38 template <class MT> |
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39 octave_value |
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40 octave_base_matrix<MT>::do_index_op (const octave_value_list& idx) |
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41 { |
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42 octave_value retval; |
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43 |
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44 int len = idx.length (); |
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45 |
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46 switch (len) |
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47 { |
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48 case 2: |
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49 { |
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50 idx_vector i = idx (0).index_vector (); |
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51 idx_vector j = idx (1).index_vector (); |
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52 |
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53 retval = MT (matrix.index (i, j)); |
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54 } |
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55 break; |
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56 |
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57 case 1: |
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58 { |
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59 idx_vector i = idx (0).index_vector (); |
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60 |
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61 retval = MT (matrix.index (i)); |
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62 } |
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63 break; |
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64 |
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65 default: |
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66 { |
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67 std::string n = type_name (); |
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68 |
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69 error ("invalid number of indices (%d) for %s value", |
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70 len, n.c_str ()); |
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71 } |
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72 break; |
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73 } |
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74 |
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75 return retval; |
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76 } |
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77 |
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78 template <class MT> |
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79 bool |
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80 octave_base_matrix<MT>::is_true (void) const |
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81 { |
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82 bool retval = false; |
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83 |
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84 if (rows () == 0 || columns () == 0) |
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85 { |
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86 int flag = Vpropagate_empty_matrices; |
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87 |
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88 if (flag < 0) |
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89 warning ("empty matrix used in conditional expression"); |
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90 else if (flag == 0) |
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91 error ("empty matrix used in conditional expression"); |
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92 } |
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93 else |
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94 { |
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95 boolMatrix m = (matrix.all ()) . all (); |
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96 |
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97 retval = (m.rows () == 1 && m.columns () == 1 && m (0, 0) != 0.0); |
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98 } |
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99 |
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100 return retval; |
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101 } |
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102 |
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103 template <class MT> |
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104 bool |
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105 octave_base_matrix<MT>::print_as_scalar (void) const |
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106 { |
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107 int nr = rows (); |
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108 int nc = columns (); |
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109 |
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110 return (nr == 1 && nc == 1 || (nr == 0 || nc == 0)); |
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111 } |
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112 |
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113 template <class MT> |
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114 void |
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115 octave_base_matrix<MT>::print (std::ostream& os, bool pr_as_read_syntax) const |
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116 { |
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117 print_raw (os, pr_as_read_syntax); |
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118 newline (os); |
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119 } |
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120 |
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121 template <class MT> |
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122 void |
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123 octave_base_matrix<MT>::print_raw (std::ostream& os, bool pr_as_read_syntax) const |
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124 { |
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125 octave_print_internal (os, matrix, pr_as_read_syntax, |
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126 current_print_indent_level ()); |
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127 } |
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128 |
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129 template <class MT> |
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130 bool |
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131 octave_base_matrix<MT>::print_name_tag (std::ostream& os, const std::string& name) const |
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132 { |
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133 bool retval = false; |
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134 |
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135 indent (os); |
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136 |
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137 if (print_as_scalar ()) |
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138 os << name << " = "; |
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139 else |
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140 { |
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141 os << name << " ="; |
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142 newline (os); |
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143 newline (os); |
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144 retval = true; |
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145 } |
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146 |
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147 return retval; |
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148 } |
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149 |
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150 /* |
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151 ;;; Local Variables: *** |
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152 ;;; mode: C++ *** |
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153 ;;; End: *** |
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154 */ |
