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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include "Array-util.h" |
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4669
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29 #include "dim-vector.h" |
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30 #include "lo-error.h" |
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31 |
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32 bool |
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5275
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33 index_in_bounds (const Array<octave_idx_type>& ra_idx, const dim_vector& dimensions) |
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34 { |
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35 bool retval = true; |
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36 |
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37 int n = ra_idx.length (); |
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38 |
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39 if (n == dimensions.length ()) |
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40 { |
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41 for (int i = 0; i < n; i++) |
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42 { |
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4747
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43 if (ra_idx(i) < 0 || ra_idx(i) >= dimensions(i)) |
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4588
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44 { |
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45 retval = false; |
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46 break; |
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47 } |
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48 } |
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49 } |
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50 else |
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51 retval = false; |
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52 |
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53 return retval; |
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54 } |
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55 |
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56 void |
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5275
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57 increment_index (Array<octave_idx_type>& ra_idx, const dim_vector& dimensions, |
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58 int start_dimension) |
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59 { |
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60 ra_idx(start_dimension)++; |
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61 |
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62 int n = ra_idx.length () - 1; |
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63 |
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64 for (int i = start_dimension; i < n; i++) |
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65 { |
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66 if (ra_idx(i) < dimensions(i)) |
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67 break; |
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68 else |
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69 { |
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70 ra_idx(i) = 0; |
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71 ra_idx(i+1)++; |
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72 } |
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73 } |
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74 } |
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75 |
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76 octave_idx_type |
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77 get_scalar_idx (Array<octave_idx_type>& idx, dim_vector& dims) |
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78 { |
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79 octave_idx_type retval (-1); |
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80 |
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81 int n = idx.length (); |
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82 |
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83 if (n > 0) |
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84 { |
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85 retval = idx(--n); |
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86 |
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87 while (--n >= 0) |
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88 { |
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89 retval *= dims (n); |
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90 |
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91 retval += idx(n); |
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92 } |
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93 } |
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94 return retval; |
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95 } |
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96 |
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97 octave_idx_type |
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98 num_ones (const Array<octave_idx_type>& ra_idx) |
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99 { |
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100 octave_idx_type retval = 0; |
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101 |
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102 for (octave_idx_type i = 0; i < ra_idx.length (); i++) |
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103 { |
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104 if (ra_idx (i) == 1) |
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105 retval++; |
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106 } |
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107 |
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108 return retval; |
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109 } |
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110 |
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111 bool |
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112 is_scalar (const dim_vector& dim) |
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113 { |
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114 bool retval = true; |
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115 |
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116 int n = dim.length (); |
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117 |
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118 if (n == 0) |
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119 { |
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120 retval = false; |
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121 } |
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122 else |
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123 { |
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124 for (int i = 0; i < n; i ++) |
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125 { |
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126 if (dim (i) != 1) |
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127 { |
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128 retval = false; |
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129 |
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130 break; |
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131 } |
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132 } |
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133 } |
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134 return retval; |
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135 } |
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136 |
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137 bool |
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138 any_ones (const Array<octave_idx_type>& arr) |
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139 { |
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140 bool retval = false; |
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141 |
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142 for (octave_idx_type i = 0; i < arr.length (); i++) |
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143 { |
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144 if (arr (i) == 1) |
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145 { |
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146 retval = true; |
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147 |
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148 break; |
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149 } |
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150 } |
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151 return retval; |
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152 } |
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153 |
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154 octave_idx_type |
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155 compute_index (const Array<octave_idx_type>& ra_idx, const dim_vector& dims) |
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156 { |
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157 octave_idx_type retval = -1; |
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158 |
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159 int n = dims.length (); |
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160 |
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161 if (n > 0 && n == ra_idx.length ()) |
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162 { |
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163 retval = ra_idx(--n); |
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164 |
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165 while (--n >= 0) |
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166 { |
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167 retval *= dims(n); |
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168 |
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169 retval += ra_idx(n); |
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170 } |
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171 } |
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172 else |
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173 (*current_liboctave_error_handler) |
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174 ("ArrayN<T>::compute_index: invalid ra_idxing operation"); |
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175 |
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176 return retval; |
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177 } |
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178 |
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179 Array<octave_idx_type> |
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180 conv_to_int_array (const Array<idx_vector>& a) |
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181 { |
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182 Array<octave_idx_type> retval (a.length ()); |
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183 |
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184 for (octave_idx_type i = 0; i < a.length (); i++) |
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185 retval (i) = a(i).elem (0); |
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186 |
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187 return retval; |
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188 } |
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189 |
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190 Array<idx_vector> |
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191 conv_to_array (const idx_vector *tmp, const octave_idx_type len) |
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192 { |
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193 Array<idx_vector> retval (len); |
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194 |
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195 for (octave_idx_type i = 0; i < len; i++) |
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196 retval (i) = tmp[i]; |
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197 |
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198 return retval; |
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199 } |
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200 |
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201 dim_vector |
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202 freeze (Array<idx_vector>& ra_idx, const dim_vector& dimensions, int resize_ok) |
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203 { |
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204 dim_vector retval; |
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205 |
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206 int n = ra_idx.length (); |
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207 |
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208 assert (n == dimensions.length ()); |
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209 |
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210 retval.resize (n); |
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211 |
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5136
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212 static const char *tag[3] = { "row", "column", 0 }; |
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213 |
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214 for (int i = 0; i < n; i++) |
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215 retval(i) = ra_idx(i).freeze (dimensions(i), tag[i < 2 ? i : 3], |
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216 resize_ok); |
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217 |
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218 return retval; |
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219 } |
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220 |
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221 bool |
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222 vector_equivalent (const dim_vector& dv) |
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223 { |
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5519
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224 int n = dv.length (); |
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225 |
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226 bool found_first = false; |
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227 |
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228 for (int i = 0; i < n; i++) |
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229 { |
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230 if (dv(i) != 1) |
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231 { |
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232 if (! found_first) |
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233 found_first = true; |
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234 else |
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235 return false; |
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236 } |
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237 } |
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238 |
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239 return true; |
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240 } |
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241 |
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242 bool |
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243 all_ok (const Array<idx_vector>& ra_idx) |
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244 { |
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245 bool retval = true; |
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246 |
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247 octave_idx_type n = ra_idx.length (); |
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248 |
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249 for (octave_idx_type i = 0; i < n; i++) |
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250 { |
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251 if (! ra_idx(i)) |
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252 { |
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253 retval = false; |
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254 break; |
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255 } |
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256 } |
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257 |
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258 return retval; |
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259 } |
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260 |
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261 bool |
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262 any_orig_empty (const Array<idx_vector>& ra_idx) |
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263 { |
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264 bool retval = false; |
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265 |
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266 octave_idx_type n = ra_idx.length (); |
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267 |
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268 for (octave_idx_type i = 0; i < n; i++) |
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269 { |
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270 if (ra_idx(i).orig_empty ()) |
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271 { |
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272 retval = true; |
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273 break; |
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274 } |
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275 } |
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276 |
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277 return retval; |
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278 } |
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279 |
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280 bool |
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281 all_colon_equiv (const Array<idx_vector>& ra_idx, |
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282 const dim_vector& frozen_lengths) |
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283 { |
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284 bool retval = true; |
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285 |
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286 octave_idx_type idx_n = ra_idx.length (); |
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287 |
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288 int n = frozen_lengths.length (); |
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289 |
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290 assert (idx_n == n); |
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291 |
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292 for (octave_idx_type i = 0; i < n; i++) |
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293 { |
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294 if (! ra_idx(i).is_colon_equiv (frozen_lengths(i))) |
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295 { |
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296 retval = false; |
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297 break; |
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298 } |
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299 } |
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300 |
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301 return retval; |
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302 } |
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303 |
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304 bool |
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305 is_in (octave_idx_type num, const idx_vector& idx) |
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306 { |
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307 octave_idx_type n = idx.capacity (); |
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308 |
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309 for (octave_idx_type i = 0; i < n; i++) |
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310 if (idx.elem (i) == num) |
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311 return true; |
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312 |
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313 return false; |
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314 } |
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315 |
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316 octave_idx_type |
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317 how_many_lgt (const octave_idx_type num, idx_vector& idxv) |
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318 { |
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319 octave_idx_type retval = 0; |
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320 |
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321 octave_idx_type n = idxv.capacity (); |
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322 |
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323 for (octave_idx_type i = 0; i < n; i++) |
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324 { |
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325 if (num > idxv.elem (i)) |
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326 retval++; |
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327 } |
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328 |
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329 return retval; |
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330 } |
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331 |
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332 bool |
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333 all_ones (const Array<octave_idx_type>& arr) |
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334 { |
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335 bool retval = true; |
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336 |
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337 for (octave_idx_type i = 0; i < arr.length (); i++) |
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338 { |
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339 if (arr(i) != 1) |
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340 { |
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341 retval = false; |
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342 break; |
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343 } |
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344 } |
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345 |
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346 return retval; |
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347 } |
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348 |
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5275
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349 Array<octave_idx_type> |
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350 get_elt_idx (const Array<idx_vector>& ra_idx, const Array<octave_idx_type>& result_idx) |
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351 { |
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352 octave_idx_type n = ra_idx.length (); |
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353 |
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5275
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354 Array<octave_idx_type> retval (n); |
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355 |
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5275
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356 for (octave_idx_type i = 0; i < n; i++) |
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357 retval(i) = ra_idx(i).elem (result_idx(i)); |
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358 |
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359 return retval; |
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360 } |
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361 |
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5275
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362 Array<octave_idx_type> |
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363 get_ra_idx (octave_idx_type idx, const dim_vector& dims) |
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364 { |
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5275
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365 Array<octave_idx_type> retval; |
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366 |
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367 int n_dims = dims.length (); |
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368 |
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369 retval.resize (n_dims); |
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370 |
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371 for (int i = 0; i < n_dims; i++) |
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372 retval(i) = 0; |
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373 |
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4747
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374 assert (idx > 0 || idx < dims.numel ()); |
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375 |
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5275
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376 for (octave_idx_type i = 0; i < idx; i++) |
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377 increment_index (retval, dims); |
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378 |
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379 // XXX FIXME XXX -- the solution using increment_index is not |
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380 // efficient. |
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381 |
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382 #if 0 |
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383 octave_idx_type var = 1; |
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384 for (int i = 0; i < n_dims; i++) |
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385 { |
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386 std::cout << "idx: " << idx << ", var: " << var << ", dims(" << i << "): " << dims(i) <<"\n"; |
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387 retval(i) = ((int)floor(((idx) / (double)var))) % dims(i); |
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388 idx -= var * retval(i); |
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389 var = dims(i); |
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390 } |
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391 #endif |
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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 dim_vector |
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397 short_freeze (Array<idx_vector>& ra_idx, const dim_vector& dimensions, |
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398 int resize_ok) |
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399 { |
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400 dim_vector retval; |
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401 |
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402 int n = ra_idx.length (); |
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403 |
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404 int n_dims = dimensions.length (); |
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405 |
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406 if (n == n_dims) |
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407 { |
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408 retval = freeze (ra_idx, dimensions, resize_ok); |
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409 } |
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410 else if (n < n_dims) |
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411 { |
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412 retval.resize (n); |
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413 |
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414 for (int i = 0; i < n - 1; i++) |
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415 retval(i) = ra_idx(i).freeze (dimensions(i), "dimension", resize_ok); |
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416 |
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417 int size_left = 1; |
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418 |
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419 for (int i = n - 1; i < n_dims; i++) |
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420 size_left *= dimensions(i); |
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421 |
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422 if (ra_idx(n-1).is_colon()) |
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423 { |
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424 retval(n-1) = size_left; |
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425 } |
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426 else |
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427 { |
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5275
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428 octave_idx_type last_ra_idx = ra_idx(n-1)(0); |
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429 for (octave_idx_type i = 1; i < ra_idx (n - 1).capacity (); i++) |
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4887
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430 last_ra_idx = (last_ra_idx > ra_idx(n-1)(i) ? last_ra_idx : |
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431 ra_idx(n-1)(i)); |
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4588
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432 |
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4887
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433 if (last_ra_idx < size_left) |
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4588
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434 { |
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4887
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435 retval(n-1) = ra_idx(n-1).freeze (size_left, |
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436 "dimension", resize_ok); |
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4588
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437 } |
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438 else |
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439 { |
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4887
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440 // Make it larger than it should be to get an error |
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441 // later. |
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4588
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442 |
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4887
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443 retval.resize (n_dims+1); |
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444 |
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445 (*current_liboctave_error_handler) |
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446 ("index exceeds N-d array dimensions"); |
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4588
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447 } |
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448 } |
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449 } |
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450 |
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451 return retval; |
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452 } |
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453 |
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4669
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454 void |
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455 gripe_nonconformant (const char *op, int op1_len, int op2_len) |
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456 { |
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457 (*current_liboctave_error_handler) |
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458 ("%s: nonconformant arguments (op1 len: %d, op2 len: %d)", |
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459 op, op1_len, op2_len); |
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460 } |
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461 |
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462 void |
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463 gripe_nonconformant (const char *op, int op1_nr, int op1_nc, |
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464 int op2_nr, int op2_nc) |
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465 { |
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466 (*current_liboctave_error_handler) |
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467 ("%s: nonconformant arguments (op1 is %dx%d, op2 is %dx%d)", |
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468 op, op1_nr, op1_nc, op2_nr, op2_nc); |
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469 } |
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470 |
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471 void |
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472 gripe_nonconformant (const char *op, dim_vector& op1_dims, |
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473 dim_vector& op2_dims) |
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474 { |
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475 std::string op1_dims_str = op1_dims.str (); |
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476 std::string op2_dims_str = op2_dims.str (); |
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477 |
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478 (*current_liboctave_error_handler) |
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479 ("%s: nonconformant arguments (op1 is %s, op2 is %s)", |
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480 op, op1_dims_str.c_str (), op2_dims_str.c_str ()); |
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481 } |
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482 |
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4588
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483 /* |
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484 ;;; Local Variables: *** |
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485 ;;; mode: C++ *** |
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486 ;;; End: *** |
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487 */ |
