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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__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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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 <climits> |
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32 |
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33 #include <iostream> |
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34 |
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35 #include "lo-ieee.h" |
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36 #include "lo-utils.h" |
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37 #include "mx-base.h" |
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38 #include "quit.h" |
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39 |
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40 #include "gripes.h" |
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41 #include "oct-obj.h" |
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42 #include "oct-lvalue.h" |
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43 #include "ops.h" |
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44 #include "ov-base.h" |
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45 #include "ov-base-mat.h" |
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46 #include "ov-base-mat.cc" |
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47 #include "ov-scalar.h" |
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48 #include "ov-re-mat.h" |
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49 #include "pr-output.h" |
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50 #include "variables.h" |
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51 |
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52 #if ! defined (UCHAR_MAX) |
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53 #define UCHAR_MAX 255 |
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54 #endif |
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55 |
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56 template class octave_base_matrix<Matrix>; |
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57 |
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58 DEFINE_OCTAVE_ALLOCATOR (octave_matrix); |
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59 |
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60 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_matrix, "matrix"); |
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61 |
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62 octave_value * |
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63 octave_matrix::try_narrowing_conversion (void) |
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64 { |
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65 octave_value *retval = 0; |
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66 |
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67 int nr = matrix.rows (); |
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68 int nc = matrix.cols (); |
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69 |
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70 if (nr == 1 && nc == 1) |
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71 retval = new octave_scalar (matrix (0, 0)); |
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72 |
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73 return retval; |
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74 } |
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75 |
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76 bool |
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77 octave_matrix::valid_as_scalar_index (void) const |
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78 { |
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79 // XXX FIXME XXX |
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80 return false; |
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81 } |
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82 |
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83 double |
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84 octave_matrix::double_value (bool) const |
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85 { |
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86 double retval = lo_ieee_nan_value (); |
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87 |
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88 // XXX FIXME XXX -- maybe this should be a function, valid_as_scalar() |
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89 if ((rows () == 1 && columns () == 1) |
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90 || (Vdo_fortran_indexing && rows () > 0 && columns () > 0)) |
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91 retval = matrix (0, 0); |
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92 else |
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93 gripe_invalid_conversion ("real matrix", "real scalar"); |
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94 |
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95 return retval; |
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96 } |
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97 |
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98 Complex |
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99 octave_matrix::complex_value (bool) const |
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100 { |
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101 double tmp = lo_ieee_nan_value (); |
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102 |
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103 Complex retval (tmp, tmp); |
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104 |
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105 if ((rows () == 1 && columns () == 1) |
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106 || (Vdo_fortran_indexing && rows () > 0 && columns () > 0)) |
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107 retval = matrix (0, 0); |
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108 else |
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109 gripe_invalid_conversion ("real matrix", "complex scalar"); |
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110 |
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111 return retval; |
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112 } |
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113 |
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114 octave_value |
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115 octave_matrix::convert_to_str (void) const |
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116 { |
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117 octave_value retval; |
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118 |
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119 int nr = matrix.rows (); |
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120 int nc = matrix.columns (); |
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121 |
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122 if (nr == 0 && nc == 0) |
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123 { |
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124 char s = '\0'; |
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125 retval = octave_value (&s); |
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126 } |
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127 else |
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128 { |
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129 if (nr == 0 || nc == 0) |
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130 { |
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131 char s = '\0'; |
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132 retval = octave_value (&s); |
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133 } |
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134 else |
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135 { |
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136 charMatrix chm (nr, nc); |
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137 |
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138 bool warned = false; |
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139 |
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140 for (int j = 0; j < nc; j++) |
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141 { |
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142 for (int i = 0; i < nr; i++) |
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143 { |
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144 OCTAVE_QUIT; |
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145 |
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146 double d = matrix (i, j); |
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147 |
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148 if (xisnan (d)) |
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149 { |
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150 ::error ("invalid conversion from NaN to character"); |
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151 return retval; |
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152 } |
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153 else |
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154 { |
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155 int ival = NINT (d); |
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156 |
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157 if (ival < 0 || ival > UCHAR_MAX) |
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158 { |
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159 // XXX FIXME XXX -- is there something |
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160 // better we could do? |
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161 |
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162 ival = 0; |
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163 |
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164 if (! warned) |
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165 { |
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166 ::warning ("range error for conversion to character value"); |
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167 warned = true; |
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168 } |
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169 } |
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170 |
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171 chm (i, j) = static_cast<char> (ival); |
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172 } |
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173 } |
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174 } |
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175 |
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176 retval = octave_value (chm, 1); |
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177 } |
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178 } |
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179 |
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180 return retval; |
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181 } |
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182 |
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183 /* |
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184 ;;; Local Variables: *** |
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185 ;;; mode: C++ *** |
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186 ;;; End: *** |
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187 */ |
