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1 /* |
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2 |
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3 Copyright (C) 2003 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 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include "Array-util.h" |
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28 #include "dim-vector.h" |
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29 #include "lo-error.h" |
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4588
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30 |
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31 bool |
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32 index_in_bounds (const Array<int>& ra_idx, const dim_vector& dimensions) |
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33 { |
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34 bool retval = true; |
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35 |
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36 int n = ra_idx.length (); |
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37 |
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38 if (n == dimensions.length ()) |
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39 { |
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40 for (int i = 0; i < n; i++) |
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41 { |
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42 if (ra_idx(i) < 0 || ra_idx(i) > dimensions (i)) |
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43 { |
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44 retval = false; |
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45 break; |
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46 } |
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47 } |
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48 } |
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49 else |
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50 retval = false; |
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51 |
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52 return retval; |
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53 } |
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54 |
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55 void |
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56 increment_index (Array<int>& ra_idx, const dim_vector& dimensions, |
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57 int start_dimension) |
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58 { |
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59 ra_idx(start_dimension)++; |
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60 |
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61 int n = ra_idx.length () - 1; |
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62 |
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63 for (int i = start_dimension; i < n; i++) |
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64 { |
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65 if (ra_idx(i) < dimensions(i)) |
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66 break; |
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67 else |
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68 { |
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69 ra_idx(i) = 0; |
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70 ra_idx(i+1)++; |
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71 } |
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72 } |
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73 } |
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74 |
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75 int |
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76 get_scalar_idx (Array<int>& idx, dim_vector& dims) |
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77 { |
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78 int retval (-1); |
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79 |
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80 int n = idx.length (); |
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81 |
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82 if (n > 0) |
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83 { |
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84 retval = idx(--n); |
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85 |
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86 while (--n >= 0) |
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87 { |
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88 retval *= dims (n); |
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89 |
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90 retval += idx(n); |
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91 } |
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92 } |
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93 return retval; |
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94 } |
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95 |
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96 int |
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97 num_ones (const Array<int>& ra_idx) |
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98 { |
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99 int retval = 0; |
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100 |
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101 for (int i = 0; i < ra_idx.length (); i++) |
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102 { |
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103 if (ra_idx (i) == 1) |
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104 retval++; |
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105 } |
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106 |
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107 return retval; |
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108 } |
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109 |
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110 bool |
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111 is_scalar (const dim_vector& dim) |
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112 { |
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113 bool retval = true; |
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114 |
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115 int n = dim.length (); |
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116 |
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117 if (n == 0) |
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118 { |
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119 retval = false; |
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120 } |
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121 else |
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122 { |
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123 for (int i = 0; i < n; i ++) |
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124 { |
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125 if (dim (i) != 1) |
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126 { |
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127 retval = false; |
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128 |
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129 break; |
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130 } |
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131 } |
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132 } |
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133 return retval; |
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134 } |
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135 |
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136 bool |
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137 any_ones (const Array<int>& arr) |
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138 { |
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139 bool retval = false; |
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140 |
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141 for (int i = 0; i < arr.length (); i++) |
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142 { |
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143 if (arr (i) == 1) |
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144 { |
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145 retval = true; |
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146 |
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147 break; |
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148 } |
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149 } |
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150 return retval; |
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151 } |
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152 |
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153 int |
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154 compute_index (const Array<int>& ra_idx, const dim_vector& dims) |
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155 { |
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156 int retval = -1; |
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157 |
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158 int n = dims.length (); |
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159 |
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160 if (n > 0 && n == ra_idx.length ()) |
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161 { |
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162 retval = ra_idx(--n); |
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163 |
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164 while (--n >= 0) |
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165 { |
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166 retval *= dims(n); |
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167 |
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168 retval += ra_idx(n); |
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169 } |
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170 } |
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171 else |
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172 (*current_liboctave_error_handler) |
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173 ("ArrayN<T>::compute_index: invalid ra_idxing operation"); |
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174 |
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175 return retval; |
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176 } |
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177 |
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178 Array<int> |
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179 conv_to_int_array (const Array<idx_vector>& a) |
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180 { |
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181 Array<int> retval (a.length ()); |
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182 |
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183 for (int i = 0; i < a.length (); i++) |
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184 retval (i) = a(i).elem (0); |
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185 |
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186 return retval; |
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187 } |
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188 |
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189 Array<idx_vector> |
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190 conv_to_array (const idx_vector *tmp, const int len) |
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191 { |
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192 Array<idx_vector> retval (len); |
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193 |
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194 for (int i = 0; i < len; i++) |
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195 retval (i) = tmp[i]; |
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196 |
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197 return retval; |
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198 } |
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199 |
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200 dim_vector |
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201 freeze (Array<idx_vector>& ra_idx, const dim_vector& dimensions, int resize_ok) |
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202 { |
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203 dim_vector retval; |
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204 |
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205 int n = ra_idx.length (); |
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206 |
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207 assert (n == dimensions.length ()); |
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208 |
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209 retval.resize (n); |
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210 |
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211 for (int i = 0; i < n; i++) |
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212 retval(i) = ra_idx(i).freeze (dimensions(i), "XXX FIXME XXX", resize_ok); |
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213 |
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214 return retval; |
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215 } |
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216 |
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217 bool |
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218 vector_equivalent (const Array<int>& ra_idx) |
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219 { |
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220 int n = ra_idx.length (); |
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221 |
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222 bool found_first = false; |
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223 |
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224 for (int i = 0; i < n; i++) |
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225 { |
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226 if (ra_idx(i) != 1) |
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227 { |
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228 if (! found_first) |
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229 found_first = true; |
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230 else |
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231 return false; |
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232 } |
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233 } |
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234 |
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235 return true; |
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236 } |
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237 |
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238 bool |
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239 equal_arrays (const dim_vector& a, const dim_vector& b) |
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240 { |
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241 bool retval = true; |
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242 |
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243 if (a.length () != b.length ()) |
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244 retval = false; |
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245 else |
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246 { |
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247 for (int i = 0; i < a.length (); i++) |
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248 { |
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249 if (a(i) != b(i)) |
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250 retval = false; |
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251 } |
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252 } |
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253 |
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254 return retval; |
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255 } |
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256 |
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257 bool |
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258 all_ok (const Array<idx_vector>& ra_idx) |
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259 { |
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260 bool retval = true; |
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261 |
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262 int n = ra_idx.length (); |
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263 |
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264 for (int i = 0; i < n; i++) |
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265 { |
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266 if (! ra_idx(i)) |
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267 { |
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268 retval = false; |
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269 break; |
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270 } |
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271 } |
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272 |
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273 return retval; |
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274 } |
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275 |
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276 bool |
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277 any_orig_empty (const Array<idx_vector>& ra_idx) |
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278 { |
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279 bool retval = false; |
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280 |
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281 int n = ra_idx.length (); |
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282 |
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283 for (int i = 0; i < n; i++) |
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284 { |
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285 if (ra_idx(i).orig_empty ()) |
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286 { |
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287 retval = true; |
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288 break; |
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289 } |
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290 } |
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291 |
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292 return retval; |
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293 } |
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294 |
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295 bool |
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296 any_zero_len (const dim_vector& frozen_lengths) |
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297 { |
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298 bool retval = false; |
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299 |
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300 int n = frozen_lengths.length (); |
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301 |
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302 for (int i = 0; i < n; i++) |
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303 { |
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304 if (frozen_lengths(i) == 0) |
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305 { |
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306 retval = true; |
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307 break; |
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308 } |
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309 } |
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310 |
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311 return retval; |
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312 } |
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313 |
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314 bool |
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315 all_colon_equiv (const Array<idx_vector>& ra_idx, |
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316 const dim_vector& frozen_lengths) |
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317 { |
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318 bool retval = true; |
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319 |
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320 int idx_n = ra_idx.length (); |
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321 |
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322 int n = frozen_lengths.length (); |
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323 |
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324 assert (idx_n == n); |
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325 |
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326 for (int i = 0; i < n; i++) |
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327 { |
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328 if (! ra_idx(i).is_colon_equiv (frozen_lengths(i))) |
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329 { |
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330 retval = false; |
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331 break; |
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332 } |
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333 } |
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334 |
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335 return retval; |
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336 } |
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337 |
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338 bool |
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339 is_in (int num, const idx_vector& idx) |
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340 { |
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341 int n = idx.capacity (); |
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342 |
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343 for (int i = 0; i < n; i++) |
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344 if (idx.elem (i) == num) |
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345 return true; |
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346 |
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347 return false; |
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348 } |
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349 |
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350 int |
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351 how_many_lgt (const int num, idx_vector& idxv) |
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352 { |
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353 int retval = 0; |
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354 |
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355 int n = idxv.capacity (); |
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356 |
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357 for (int i = 0; i < n; i++) |
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358 { |
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359 if (num > idxv.elem (i)) |
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360 retval++; |
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361 } |
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362 |
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363 return retval; |
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364 } |
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365 |
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366 bool |
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367 all_ones (const Array<int>& arr) |
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368 { |
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369 bool retval = true; |
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370 |
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371 for (int i = 0; i < arr.length (); i++) |
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372 { |
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373 if (arr(i) != 1) |
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374 { |
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375 retval = false; |
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376 break; |
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377 } |
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378 } |
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379 |
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380 return retval; |
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381 } |
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382 |
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383 Array<int> |
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384 get_elt_idx (const Array<idx_vector>& ra_idx, const Array<int>& result_idx) |
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385 { |
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386 int n = ra_idx.length (); |
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387 |
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388 Array<int> retval (n); |
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389 |
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390 for (int i = 0; i < n; i++) |
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391 retval(i) = ra_idx(i).elem (result_idx(i)); |
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392 |
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393 return retval; |
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394 } |
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395 |
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396 int |
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397 number_of_elements (const dim_vector ra_idx) |
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398 { |
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399 int retval = 1; |
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400 |
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401 int n = ra_idx.length (); |
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402 |
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403 if (n == 0) |
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404 retval = 0; |
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405 |
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406 for (int i = 0; i < n; i++) |
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407 retval *= ra_idx(i); |
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408 |
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409 return retval; |
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410 } |
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411 |
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412 Array<int> |
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413 get_ra_idx (int idx, const dim_vector& dims) |
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414 { |
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415 Array<int> retval; |
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416 |
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417 int n_dims = dims.length (); |
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418 |
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419 retval.resize (n_dims); |
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420 |
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421 for (int i = 0; i < n_dims; i++) |
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422 retval(i) = 0; |
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423 |
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424 assert (idx > 0 || idx < number_of_elements (dims)); |
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425 |
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426 for (int i = 0; i < idx; i++) |
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427 increment_index (retval, dims); |
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428 |
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429 // XXX FIXME XXX -- the solution using increment_index is not |
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430 // efficient. |
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431 |
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432 #if 0 |
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433 int var = 1; |
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434 for (int i = 0; i < n_dims; i++) |
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435 { |
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436 std::cout << "idx: " << idx << ", var: " << var << ", dims(" << i << "): " << dims(i) <<"\n"; |
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437 retval(i) = ((int)floor(((idx) / (double)var))) % dims(i); |
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438 idx -= var * retval(i); |
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439 var = dims(i); |
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440 } |
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441 #endif |
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442 |
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443 return retval; |
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444 } |
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445 |
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446 dim_vector |
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447 short_freeze (Array<idx_vector>& ra_idx, const dim_vector& dimensions, |
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448 int resize_ok) |
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449 { |
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450 dim_vector retval; |
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451 |
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452 int n = ra_idx.length (); |
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453 |
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454 int n_dims = dimensions.length (); |
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455 |
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456 if (n == n_dims) |
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457 { |
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458 retval = freeze (ra_idx, dimensions, resize_ok); |
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459 } |
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460 else if (n < n_dims) |
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461 { |
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462 retval.resize (n); |
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463 |
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464 for (int i = 0; i < n - 1; i++) |
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465 retval(i) = ra_idx(i).freeze (dimensions(i), "dimension", resize_ok); |
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466 |
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467 int size_left = 1; |
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468 |
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469 for (int i = n - 1; i < n_dims; i++) |
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470 size_left *= dimensions(i); |
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471 |
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472 if (ra_idx(n-1).is_colon()) |
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473 { |
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474 retval(n-1) = size_left; |
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475 } |
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476 else |
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477 { |
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478 int last_ra_idx = ra_idx(n-1)(0); |
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479 |
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480 if (last_ra_idx < dimensions(n - 1)) |
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481 { |
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482 retval(n - 1) = ra_idx(n - 1).freeze (dimensions(n-1), |
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483 "dimension", resize_ok); |
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484 } |
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485 else |
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486 { |
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487 if (size_left <= last_ra_idx) |
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488 { |
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489 // Make it larger than it should be to get an error |
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490 // later. |
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491 |
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492 retval.resize(n_dims + 1); |
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493 |
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494 (*current_liboctave_error_handler) |
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495 ("index exceeds N-d array dimensions"); |
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496 } |
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497 else |
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498 { |
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499 retval(n-1) = 1; |
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500 } |
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501 } |
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502 } |
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503 } |
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504 |
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505 return retval; |
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506 } |
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507 |
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4593
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508 Array<int> |
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509 calc_permutated_idx (const Array<int>& old_idx, |
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510 const Array<int>& perm_vec, bool inv) |
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511 { |
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512 int n_el = old_idx.length (); |
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513 |
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514 Array<int> retval (n_el); |
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515 |
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516 for (int i = 0; i < n_el; i++) |
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517 { |
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518 if (inv) |
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519 retval(perm_vec(i)-1) = old_idx(i); |
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520 else |
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521 retval(i) = old_idx(perm_vec(i)-1); |
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522 } |
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523 |
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524 return retval; |
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525 } |
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526 |
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4669
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527 void |
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528 gripe_nonconformant (const char *op, int op1_len, int op2_len) |
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529 { |
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530 (*current_liboctave_error_handler) |
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531 ("%s: nonconformant arguments (op1 len: %d, op2 len: %d)", |
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532 op, op1_len, op2_len); |
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533 } |
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534 |
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535 void |
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536 gripe_nonconformant (const char *op, int op1_nr, int op1_nc, |
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537 int op2_nr, int op2_nc) |
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538 { |
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539 (*current_liboctave_error_handler) |
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540 ("%s: nonconformant arguments (op1 is %dx%d, op2 is %dx%d)", |
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541 op, op1_nr, op1_nc, op2_nr, op2_nc); |
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542 } |
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543 |
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544 void |
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545 gripe_nonconformant (const char *op, dim_vector& op1_dims, |
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546 dim_vector& op2_dims) |
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547 { |
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548 std::string op1_dims_str = op1_dims.str (); |
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549 std::string op2_dims_str = op2_dims.str (); |
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550 |
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551 (*current_liboctave_error_handler) |
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552 ("%s: nonconformant arguments (op1 is %s, op2 is %s)", |
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553 op, op1_dims_str.c_str (), op2_dims_str.c_str ()); |
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554 } |
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555 |
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4588
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556 /* |
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557 ;;; Local Variables: *** |
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558 ;;; mode: C++ *** |
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559 ;;; End: *** |
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560 */ |
