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2974
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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 "error.h" |
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32 #include "gripes.h" |
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33 #include "oct-obj.h" |
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34 #include "ov-mapper.h" |
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35 #include "ov.h" |
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36 |
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37 octave_allocator |
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38 octave_mapper::allocator (sizeof (octave_mapper)); |
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39 |
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40 int |
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41 octave_mapper::t_id (-1); |
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42 |
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43 const string |
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44 octave_mapper::t_name ("built-in mapper function"); |
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45 |
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46 static bool |
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47 any_element_less_than (const Matrix& a, double val) |
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48 { |
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49 int nr = a.rows (); |
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50 int nc = a.columns (); |
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51 |
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52 for (int j = 0; j < nc; j++) |
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53 for (int i = 0; i < nr; i++) |
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54 if (a (i, j) < val) |
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55 return true; |
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56 |
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57 return false; |
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58 } |
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59 |
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60 static bool |
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61 any_element_greater_than (const Matrix& a, double val) |
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62 { |
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63 int nr = a.rows (); |
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64 int nc = a.columns (); |
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65 |
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66 for (int j = 0; j < nc; j++) |
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67 for (int i = 0; i < nr; i++) |
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68 if (a (i, j) > val) |
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69 return true; |
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70 |
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71 return false; |
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72 } |
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73 |
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74 octave_value |
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75 octave_mapper::apply (const octave_value& arg) const |
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76 { |
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77 octave_value retval; |
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78 |
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79 if (ch_map_fcn) |
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80 { |
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81 // XXX FIXME XXX -- this could be done in a better way... |
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82 |
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83 octave_value tmp = arg.convert_to_str (); |
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84 |
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85 if (! error_state) |
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86 { |
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87 charMatrix chm = tmp.char_matrix_value (); |
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88 |
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89 if (! error_state) |
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90 { |
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91 int nr = chm.rows (); |
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92 int nc = chm.cols (); |
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93 |
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94 switch (flag) |
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95 { |
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96 case 0: |
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97 { |
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98 Matrix result (nr, nc); |
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99 |
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100 // islapha and friends can return any nonzero value |
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101 // to mean true, but we want to return 1 or 0 only. |
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102 |
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103 for (int j = 0; j < nc; j++) |
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104 for (int i = 0; i < nr; i++) |
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105 result (i, j) = ch_map_fcn (chm (i, j)) ? 1 : 0; |
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106 |
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107 retval = result; |
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108 } |
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109 break; |
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110 |
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111 case 1: |
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112 { |
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113 Matrix result (nr, nc); |
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114 |
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115 for (int j = 0; j < nc; j++) |
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116 for (int i = 0; i < nr; i++) |
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117 result (i, j) = ch_map_fcn (chm (i, j)); |
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118 |
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119 retval = result; |
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120 } |
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121 break; |
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122 |
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123 case 2: |
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124 { |
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125 charMatrix result (nr, nc); |
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126 |
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127 for (int j = 0; j < nc; j++) |
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128 for (int i = 0; i < nr; i++) |
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129 result (i, j) = ch_map_fcn (chm (i, j)); |
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130 |
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131 retval = octave_value (result, true); |
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132 } |
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133 break; |
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134 |
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135 default: |
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136 panic_impossible (); |
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137 break; |
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138 } |
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139 } |
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140 } |
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141 } |
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142 else |
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143 { |
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144 if (arg.is_real_type ()) |
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145 { |
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146 if (arg.is_scalar_type ()) |
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147 { |
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148 double d = arg.double_value (); |
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149 |
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150 if (flag && (d < lower_limit || d > upper_limit)) |
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151 { |
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152 if (c_c_map_fcn) |
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153 retval = c_c_map_fcn (Complex (d)); |
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154 else |
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155 error ("%s: unable to handle real arguments", |
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156 name().c_str ()); |
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157 } |
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158 else if (d_d_map_fcn) |
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159 retval = d_d_map_fcn (d); |
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160 else |
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161 error ("%s: unable to handle real arguments", |
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162 name().c_str ()); |
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163 } |
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164 else |
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165 { |
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166 Matrix m = arg.matrix_value (); |
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167 |
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168 if (error_state) |
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169 return retval; |
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170 |
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171 if (flag |
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172 && (any_element_less_than (m, lower_limit) |
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173 || any_element_greater_than (m, upper_limit))) |
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174 { |
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175 if (c_c_map_fcn) |
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176 { |
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177 ComplexMatrix cm (m); |
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178 retval = cm.map (c_c_map_fcn); |
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179 } |
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180 else |
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181 error ("%s: unable to handle real arguments", |
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182 name().c_str ()); |
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183 } |
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184 else if (d_d_map_fcn) |
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185 retval = m.map (d_d_map_fcn); |
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186 else |
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187 error ("%s: unable to handle real arguments", |
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188 name().c_str ()); |
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189 } |
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190 } |
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191 else if (arg.is_complex_type ()) |
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192 { |
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193 if (arg.is_scalar_type ()) |
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194 { |
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195 Complex c = arg.complex_value (); |
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196 |
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197 if (d_c_map_fcn) |
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198 retval = d_c_map_fcn (c); |
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199 else if (c_c_map_fcn) |
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200 retval = c_c_map_fcn (c); |
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201 else |
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202 error ("%s: unable to handle complex arguments", |
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203 name().c_str ()); |
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204 } |
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205 else |
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206 { |
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207 ComplexMatrix cm = arg.complex_matrix_value (); |
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208 |
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209 if (error_state) |
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210 return retval; |
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211 |
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212 if (d_c_map_fcn) |
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213 retval = cm.map (d_c_map_fcn); |
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214 else if (c_c_map_fcn) |
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215 retval = cm.map (c_c_map_fcn); |
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216 else |
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217 error ("%s: unable to handle complex arguments", |
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218 name().c_str ()); |
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219 } |
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220 } |
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221 else |
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222 gripe_wrong_type_arg ("mapper", arg); |
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223 } |
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224 |
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225 return retval; |
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226 } |
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227 |
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228 octave_value_list |
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229 octave_mapper::do_index_op (int, const octave_value_list& args) |
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230 { |
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231 octave_value retval; |
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232 |
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233 if (error_state) |
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234 return retval; |
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235 |
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236 int nargin = args.length (); |
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237 |
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238 if (nargin > 1) |
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239 ::error ("%s: too many arguments", name().c_str ()); |
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240 else if (nargin < 1) |
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241 ::error ("%s: too few arguments", name().c_str ()); |
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242 else |
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243 { |
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244 if (args(0).is_defined ()) |
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245 retval = apply (args(0)); |
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246 else |
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247 ::error ("%s: argument undefined", name().c_str ()); |
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248 } |
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249 |
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250 return retval; |
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251 } |
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252 |
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253 /* |
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254 ;;; Local Variables: *** |
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255 ;;; mode: C++ *** |
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256 ;;; End: *** |
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257 */ |
