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1 // idx-vector.cc -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993, 1994, 1995 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__) |
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25 #pragma implementation |
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26 #endif |
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27 |
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240
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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 <cstdlib> |
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33 |
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164
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34 #include <iostream.h> |
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35 |
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1352
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36 #include "Range.h" |
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453
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37 #include "dMatrix.h" |
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38 |
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39 #include "error.h" |
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40 #include "idx-vector.h" |
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41 #include "user-prefs.h" |
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42 #include "utils.h" |
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43 |
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44 idx_vector::idx_vector (const idx_vector& a) |
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45 { |
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46 data = 0; |
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191
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47 initialized = a.initialized; |
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48 |
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49 len = a.len; |
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50 if (len > 0) |
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51 { |
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52 data = new int [len]; |
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53 for (int i = 0; i < len; i++) |
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54 data[i] = a.data[i]; |
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55 |
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56 num_zeros = a.num_zeros; |
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57 num_ones = a.num_ones; |
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58 one_zero = a.one_zero; |
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59 |
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60 max_val = a.max_val; |
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61 min_val = a.min_val; |
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62 } |
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63 } |
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64 |
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65 static inline int |
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66 tree_to_mat_idx (double x) |
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67 { |
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68 if (x > 0) |
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69 return ((int) (x + 0.5) - 1); |
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70 else |
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71 return ((int) (x - 0.5) - 1); |
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72 } |
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73 |
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74 idx_vector::idx_vector (const Matrix& m, int do_ftn_idx, |
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75 const char *rc, int z_len) |
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76 { |
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77 data = 0; |
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78 initialized = 0; |
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79 |
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80 int nr = m.rows (); |
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81 int nc = m.columns (); |
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82 |
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83 if (nr == 0 || nc == 0) |
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84 { |
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85 len = 0; |
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86 num_zeros = 0; |
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87 num_ones = 0; |
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88 one_zero = 0; |
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191
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89 initialized = 1; |
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90 return; |
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91 } |
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92 else if (nr > 1 && nc > 1 && do_ftn_idx) |
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93 { |
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94 const double *cop_out = m.data (); |
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95 len = nr * nc; |
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96 data = new int [len]; |
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97 for (int i = 0; i < len; i++) |
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98 data[i] = tree_to_mat_idx (*cop_out++); |
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99 } |
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100 else if (nr == 1 && nc > 0) |
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101 { |
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102 len = nc; |
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103 data = new int [len]; |
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104 for (int i = 0; i < len; i++) |
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105 data[i] = tree_to_mat_idx (m.elem (0, i)); |
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106 } |
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107 else if (nc == 1 && nr > 0) |
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108 { |
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109 len = nr; |
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110 data = new int [len]; |
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111 for (int i = 0; i < len; i++) |
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112 data[i] = tree_to_mat_idx (m.elem (i, 0)); |
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113 } |
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114 else |
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115 { |
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116 ::error ("invalid matrix used as index"); |
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117 return; |
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118 } |
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119 |
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120 init_state (rc, z_len); |
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121 } |
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122 |
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123 idx_vector::idx_vector (const Range& r) |
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124 { |
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125 data = 0; |
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126 initialized = 0; |
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127 |
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128 len = r.nelem (); |
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129 |
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191
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130 if (len < 0) |
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131 { |
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132 ::error ("invalid range used as index"); |
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191
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133 return; |
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134 } |
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135 else if (len == 0) |
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136 { |
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137 num_zeros = 0; |
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138 num_ones = 0; |
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139 one_zero = 0; |
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140 initialized = 1; |
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141 return; |
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142 } |
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143 |
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144 double b = r.base (); |
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145 double step = r.inc (); |
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146 |
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147 data = new int [len]; |
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148 |
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149 for (int i = 0; i < len; i++) |
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150 { |
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151 double val = b + i * step; |
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152 data[i] = tree_to_mat_idx (val); |
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153 } |
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154 |
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155 init_state (); |
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156 } |
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157 |
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158 idx_vector& |
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159 idx_vector::operator = (const idx_vector& a) |
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160 { |
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161 if (this != &a) |
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162 { |
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163 initialized = a.initialized; |
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164 |
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165 delete [] data; |
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166 len = a.len; |
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167 data = new int [len]; |
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168 for (int i = 0; i < len; i++) |
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169 data[i] = a.data[i]; |
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170 |
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171 num_zeros = a.num_zeros; |
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172 num_ones = a.num_ones; |
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173 one_zero = a.one_zero; |
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174 |
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175 max_val = a.max_val; |
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176 min_val = a.min_val; |
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177 } |
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178 return *this; |
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179 } |
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180 |
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181 void |
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182 idx_vector::init_state (const char *rc, int z_len) |
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183 { |
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184 one_zero = 1; |
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185 num_zeros = 0; |
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186 num_ones = 0; |
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187 |
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188 min_val = max_val = data[0]; |
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189 |
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190 int i = 0; |
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191 do |
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192 { |
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193 if (data[i] == -1) |
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194 num_zeros++; |
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195 else if (data[i] == 0) |
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196 num_ones++; |
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197 |
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198 if (one_zero && data[i] != -1 && data[i] != 0) |
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199 one_zero = 0; |
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200 |
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201 if (data[i] > max_val) |
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202 max_val = data[i]; |
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203 |
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204 if (data[i] < min_val) |
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205 min_val = data[i]; |
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206 } |
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207 while (++i < len); |
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208 |
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209 if (one_zero && z_len == len) |
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210 { |
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211 if (num_ones != len || user_pref.prefer_zero_one_indexing) |
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212 convert_one_zero_to_idx (); |
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213 } |
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214 else if (min_val < 0) |
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215 { |
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216 ::error ("%s index %d out of range", rc, min_val+1); |
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217 initialized = 0; |
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218 return; |
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219 } |
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220 #if 0 |
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221 // Checking max index against size won't work right here unless we |
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222 // also look at resize on range error, and we have to do that later |
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223 // on anyway. |
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224 |
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225 else if (max_val >= z_len) |
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226 { |
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227 ::error ("%s index %d out of range", rc, max_val+1); |
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228 initialized = 0; |
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229 return; |
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230 } |
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231 #endif |
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232 |
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233 initialized = 1; |
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234 } |
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235 |
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236 void |
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237 idx_vector::convert_one_zero_to_idx (void) |
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238 { |
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239 if (num_ones == 0) |
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240 { |
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241 len = 0; |
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242 max_val = 0; |
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243 min_val = 0; |
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244 delete [] data; |
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245 data = 0; |
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246 } |
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247 else |
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248 { |
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249 assert (num_ones + num_zeros == len); |
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250 |
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251 int *new_data = new int [num_ones]; |
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252 int count = 0; |
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253 for (int i = 0; i < len; i++) |
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254 if (data[i] == 0) |
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255 new_data[count++] = i; |
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256 |
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257 delete [] data; |
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258 len = num_ones; |
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259 data = new_data; |
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260 |
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261 min_val = max_val = data[0]; |
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262 |
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263 int i = 0; |
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264 do |
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265 { |
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266 if (data[i] > max_val) |
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267 max_val = data[i]; |
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268 |
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269 if (data[i] < min_val) |
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270 min_val = data[i]; |
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271 } |
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272 while (++i < len); |
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273 } |
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274 } |
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275 |
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276 static inline int |
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277 intcmp (int *i, int *j) |
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278 { |
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279 return (*i - *j); |
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280 } |
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281 |
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227
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282 int |
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283 idx_vector::checkelem (int n) const |
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284 { |
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285 if (n < 0 || n >= len) |
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286 { |
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287 ::error ("idx-vector: index out of range"); |
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288 return 0; |
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289 } |
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290 |
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291 return elem (n); |
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292 } |
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293 |
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294 void |
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295 idx_vector::sort (void) |
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296 { |
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297 qsort ((void *) data, len, sizeof (int), |
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298 (int (*)(const void*, const void*)) intcmp); |
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209
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299 } |
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300 |
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301 void |
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302 idx_vector::sort_uniq (void) |
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303 { |
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304 if (len > 0) |
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305 { |
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306 sort (); |
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307 |
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308 int *new_data = new int [len]; |
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309 new_data[0] = data[0]; |
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310 int k = 0; |
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311 for (int i = 1; i < len; i++) |
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312 { |
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313 if (data[i] != new_data[k]) |
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314 { |
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315 k++; |
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316 new_data[k] = data[i]; |
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317 } |
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318 } |
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319 delete [] data; |
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320 len = k+1; |
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321 data = new_data; |
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322 } |
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323 } |
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324 |
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434
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325 void |
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326 idx_vector::shorten (int n) |
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327 { |
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328 if (n > 0 && n <= len) |
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329 len = n; |
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330 else |
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331 panic_impossible (); |
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332 } |
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333 |
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334 ostream& |
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335 operator << (ostream& os, const idx_vector& a) |
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336 { |
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337 for (int i = 0; i < a.len; i++) |
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338 os << a.data[i] << "\n"; |
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339 return os; |
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340 } |
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341 |
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342 /* |
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343 ;;; Local Variables: *** |
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344 ;;; mode: C++ *** |
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345 ;;; page-delimiter: "^/\\*" *** |
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346 ;;; End: *** |
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347 */ |
