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1 // N-D Array 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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21 |
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22 */ |
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23 |
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24 #if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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25 #pragma implementation |
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26 #endif |
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27 |
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28 #ifdef HAVE_CONFIG_H |
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29 #include <config.h> |
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30 #endif |
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31 |
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32 #include "dNDArray.h" |
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33 #include "mx-base.h" |
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34 #include "lo-error.h" |
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35 #include "lo-ieee.h" |
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36 |
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37 #include "ArrayN-inline.h" |
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38 |
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39 NDArray::NDArray (const boolNDArray& a) |
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40 : MArrayN<double> (a.dims ()) |
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41 { |
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42 for (int i = 0; i < a.length (); i++) |
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43 elem (i) = a.elem (i); |
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44 } |
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45 |
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46 NDArray::NDArray (const charNDArray& a) |
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47 : MArrayN<double> (a.dims ()) |
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48 { |
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49 for (int i = 0; i < a.length (); i++) |
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50 elem (i) = a.elem (i); |
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51 } |
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52 |
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53 // unary operations |
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54 |
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55 boolNDArray |
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56 NDArray::operator ! (void) const |
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57 { |
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58 boolNDArray b (dims ()); |
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59 |
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60 for (int i = 0; i < length (); i++) |
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61 b.elem (i) = ! elem (i); |
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62 |
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63 return b; |
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64 } |
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65 |
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66 // XXX FIXME XXX -- this is not quite the right thing. |
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67 |
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68 boolMatrix |
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69 NDArray::all (int dim) const |
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70 { |
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71 boolMatrix retval; |
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72 |
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73 if (dimensions.length () == 2) |
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74 { |
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75 Matrix tmp = matrix_value (); |
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76 retval = tmp.all (dim); |
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77 } |
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78 else |
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79 (*current_liboctave_error_handler) |
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80 ("all is not yet implemented for N-d Arrays"); |
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81 |
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82 return retval; |
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83 } |
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84 |
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85 boolMatrix |
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86 NDArray::any (int dim) const |
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87 { |
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88 boolMatrix retval; |
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89 |
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90 if (dimensions.length () == 2) |
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91 { |
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92 Matrix tmp = matrix_value (); |
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93 retval = tmp.any (dim); |
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94 } |
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95 else |
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96 (*current_liboctave_error_handler) |
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97 ("any is not yet implemented for N-d Arrays"); |
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98 |
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99 return retval; |
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100 } |
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101 |
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102 Matrix |
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103 NDArray::matrix_value (void) const |
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104 { |
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105 Matrix retval; |
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106 |
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107 int nd = ndims (); |
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108 |
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109 switch (nd) |
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110 { |
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111 case 1: |
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112 retval = Matrix (Array2<double> (*this, dimensions(0), 1)); |
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113 break; |
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114 |
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115 case 2: |
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116 retval = Matrix (Array2<double> (*this, dimensions(0), dimensions(1))); |
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117 break; |
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118 |
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119 default: |
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120 (*current_liboctave_error_handler) |
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121 ("invalid converstion of NDArray to Matrix"); |
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122 break; |
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123 } |
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124 |
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125 return retval; |
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126 } |
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127 |
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128 void |
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129 NDArray::increment_index (Array<int>& ra_idx, |
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130 const dim_vector& dimensions, |
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131 int start_dimension) |
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132 { |
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133 ::increment_index (ra_idx, dimensions, start_dimension); |
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134 } |
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135 |
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136 bool |
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137 NDArray::any_element_is_negative (bool neg_zero) const |
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138 { |
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139 int n = length (); |
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140 if (neg_zero) |
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141 { |
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142 for (int i = 0; i < n; i++) |
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143 if (lo_ieee_signbit (Array<double>::elem (i))) |
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144 return true; |
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145 } |
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146 else |
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147 { |
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148 for (int i = 0; i < n; i++) |
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149 if (Array<double>::elem (i) < 0) |
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150 return true; |
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151 } |
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152 |
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153 return false; |
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154 } |
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155 |
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156 bool |
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157 NDArray::all_integers (double& max_val, double& min_val) const |
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158 { |
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159 int n = length (); |
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160 |
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161 if (n > 0) |
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162 { |
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163 max_val = Array<double>::elem (0); |
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164 min_val = Array<double>::elem (0); |
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165 } |
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166 else |
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167 return false; |
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168 |
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169 for (int i = 0; i < n; i++) |
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170 { |
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171 double val = Array<double>::elem (0); |
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172 |
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173 if (val > max_val) |
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174 max_val = val; |
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175 |
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176 if (val < min_val) |
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177 min_val = val; |
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178 |
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179 if (D_NINT (val) != val) |
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180 return false; |
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181 } |
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182 |
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183 return true; |
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184 } |
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185 |
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186 NDS_CMP_OPS(NDArray, , double, ) |
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187 NDS_BOOL_OPS(NDArray, double, 0.0) |
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188 |
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189 SND_CMP_OPS(double, , NDArray, ) |
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190 SND_BOOL_OPS(double, NDArray, 0.0) |
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191 |
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192 NDND_CMP_OPS(NDArray, , NDArray, ) |
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193 NDND_BOOL_OPS(NDArray, NDArray, 0.0) |
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194 |
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195 /* |
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196 ;;; Local Variables: *** |
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197 ;;; mode: C++ *** |
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198 ;;; End: *** |
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199 */ |
