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annotate liboctave/util/lo-array-gripes.cc @ 20827:e54ecb33727e

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lo-array-gripes.cc: Remove FIXME's related to buffer size. * lo-array-gripes.cc: Remove FIXME's related to buffer size. Shorten sprintf buffers from 100 to 64 characters (still well more than 19 required). Use 'const' decorator on constant value for clarity. Remove extra space between variable and array bracket.
author Rik <rik@octave.org>
date Mon, 12 Oct 2015 21:13:47 -0700
parents dd6345fd8a97
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
19898
4197fc428c7d maint: Update copyright notices for 2015.
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3 Copyright (C) 2003-2015 John W. Eaton
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4 Copyright (C) 2009 VZLU Prague
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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 3 of the License, or (at your
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11 option) any 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, see
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20 <http://www.gnu.org/licenses/>.
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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 <string.h>
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29 #include "lo-array-gripes.h"
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30 #include "lo-error.h"
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31
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32 const char *error_id_nonconformant_args = "Octave:nonconformant-args";
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33
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34 const char *error_id_index_out_of_bounds = "Octave:index-out-of-bounds";
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35
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36 const char *error_id_invalid_index = "Octave:invalid-index";
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37
19605
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38 const char *warning_id_nearly_singular_matrix = "Octave:nearly-singular-matrix";
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39
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40 const char *warning_id_singular_matrix = "Octave:singular-matrix";
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41
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42 void
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43 gripe_nan_to_logical_conversion (void)
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44 {
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45 (*current_liboctave_error_handler)
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46 ("invalid conversion from NaN to logical");
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47 }
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48
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49 void
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50 gripe_nan_to_character_conversion (void)
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51 {
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52 (*current_liboctave_error_handler)
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53 ("invalid conversion from NaN to character");
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54 }
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55
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56 void
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57 gripe_nonconformant (const char *op, octave_idx_type op1_len,
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58 octave_idx_type op2_len)
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59 {
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60 const char *err_id = error_id_nonconformant_args;
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61
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62 (*current_liboctave_error_with_id_handler)
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63 (err_id, "%s: nonconformant arguments (op1 len: %d, op2 len: %d)",
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64 op, op1_len, op2_len);
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65 }
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66
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67 void
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68 gripe_nonconformant (const char *op,
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69 octave_idx_type op1_nr, octave_idx_type op1_nc,
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70 octave_idx_type op2_nr, octave_idx_type op2_nc)
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71 {
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72 const char *err_id = error_id_nonconformant_args;
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73
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74 (*current_liboctave_error_with_id_handler)
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75 (err_id, "%s: nonconformant arguments (op1 is %dx%d, op2 is %dx%d)",
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76 op, op1_nr, op1_nc, op2_nr, op2_nc);
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77 }
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78
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79 void
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80 gripe_nonconformant (const char *op, const dim_vector& op1_dims,
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81 const dim_vector& op2_dims)
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82 {
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83 const char *err_id = error_id_nonconformant_args;
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84
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85 std::string op1_dims_str = op1_dims.str ();
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86 std::string op2_dims_str = op2_dims.str ();
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87
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88 (*current_liboctave_error_with_id_handler)
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89 (err_id, "%s: nonconformant arguments (op1 is %s, op2 is %s)",
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90 op, op1_dims_str.c_str (), op2_dims_str.c_str ());
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91 }
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92
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93 void
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94 gripe_del_index_out_of_range (bool is1d, octave_idx_type idx,
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95 octave_idx_type ext)
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96 {
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97 const char *err_id = error_id_index_out_of_bounds;
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98
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99 (*current_liboctave_error_with_id_handler)
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100 (err_id, "A(%s) = []: index out of bounds; value %d out of bound %d",
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101 is1d ? "I" : "..,I,..", idx, ext);
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102 }
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103
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104
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105
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106 // Common procedures of base class index_exception, thrown whenever an
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107 // object is indexed incorrectly, such as by an index that is out of
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108 // range, negative, fractional, complex, or of a non-numeric type.
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109
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110 const char *
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111 index_exception::err (void) throw ()
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112 {
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113 msg = access () + "; " + explain ();
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114 return msg.c_str ();
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115 }
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116
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117 // Show what was illegally accessed, e.g., "A(-1,_)", "A(0+1i)", "A(_,3)"
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118 // Show how many indices come before/after the offending one,
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119 // e.g., (<error>), (<error>,_), or (_,<error>,...[x5]...)
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120
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121 std::string
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122 index_exception:: access (void) const
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123 {
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124 // FIXME: don't use a fixed size buffer!
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125 const int buf_len = 300;
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126
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127 char output [buf_len];
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128 char pre [buf_len];
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129 char post [buf_len];
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130
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131 // dim == 0 if position not yet given, or
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132 // <static_cast unsigned int>(-1) if explicitly shown to be unknown
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133 // both are caught by this condition
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134
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135 if (static_cast <unsigned int> (dim-1) > 100000)
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136 {
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137 // No parentheses are given if the dimension is not known.
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138 pre[0] = post[0] = '\0';
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139 }
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140 else
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141 {
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142 if (dim < 5)
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143 {
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144 pre[0] = '(';
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145 octave_idx_type i;
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146
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147 for (i = 1; i < dim; i++)
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148 {
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149 pre[2*i-1] = '_';
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150 pre[2*i] = ',';
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151 }
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152
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153 pre[2*i-1] = '\0'; // i == min (1, dim)
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154 }
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155 else
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156 {
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157 sprintf (pre, "(...[x%d]...", dim-1);
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158 }
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159
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160 if (static_cast <unsigned int> (nd-dim) < 5)
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161 {
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162 for (octave_idx_type i = 0; i < nd-dim; i++)
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163 {
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164 post[2*i] = ',';
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165 post[2*i+1] = '_';
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166 }
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167
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168 if (nd >= dim)
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169 {
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170 post[2*(nd-dim)] = ')';
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171 post[2*(nd-dim)+1] = '\0';
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172 }
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173 }
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174 else
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175 sprintf (post, "...[x%d]...)", nd-dim);
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176 }
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177
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178 const char *v;
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179
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180 if (var[0] == '\0' || var == "<unknown>")
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181 v = "index ";
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182 else
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183 v = var.c_str ();
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184
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185 snprintf (output, buf_len, "%s%s%s%s", v, pre, idx(), post);
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186
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187 return output;
11135
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188 }
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189
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190 class invalid_index : public index_exception
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191 {
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192 public:
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193
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194 invalid_index (const char *value, octave_idx_type ndim,
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195 octave_idx_type dimen)
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196 : index_exception (value, ndim, dimen)
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197 { }
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198
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199 const char* explain (void) const
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200 {
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201 #ifdef USE_64_BIT_IDX_T
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202 return "subscripts must be either integers 1 to (2^63)-1 or logicals";
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203 #else
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204 return "subscripts must be either integers 1 to (2^31)-1 or logicals";
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205 #endif
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206 }
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207
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208 // ID of error to throw
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209 const char* id (void) const
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210 {
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211 return error_id_invalid_index;
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212 }
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213 };
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214
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215 // Complain of an index that is: negative, fractional, or too big.
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216
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217 void
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218 gripe_invalid_index (const char *idx, octave_idx_type nd,
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219 octave_idx_type dim, const char * /* var */)
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220 {
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221 invalid_index e (idx, nd, dim);
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222
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223 throw e;
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224 }
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225
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226 void
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227 gripe_invalid_index (octave_idx_type n, octave_idx_type nd,
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228 octave_idx_type dim, const char *var)
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229 {
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230 // Note: log10 (2^63) = 19 digits. Use 64 for ease of memory alignment.
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231 char buf[64];
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232
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233 sprintf (buf, "%d", n+1);
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234
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235 gripe_invalid_index (buf, nd, dim, var);
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236 }
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237
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238 void
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239 gripe_invalid_index (double n, octave_idx_type nd, octave_idx_type dim,
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240 const char *var)
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241 {
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242 char buf[64];
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243
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244 sprintf (buf, "%g", n+1);
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245
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246 gripe_invalid_index (buf, nd, dim, var);
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247 }
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248
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249
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250 // Gripe and exception for read access beyond the bounds of an array.
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251
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252 class out_of_range : public index_exception
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253 {
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254 public:
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255
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256 out_of_range (const char *value, octave_idx_type nd_in,octave_idx_type dim_in)
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257 : index_exception (value, nd_in, dim_in), extent(0)
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258 { }
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259
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260 const char* explain (void) const
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261 {
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262 static std::string expl; // should probably be member variable, but
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263 // then explain() can't be const.
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264
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265 if (nd >= size.length ()) // if not an index slice
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266 {
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267 if (var != "")
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268 expl = "but " + var + " has size ";
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269 else
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270 expl = "but object has size ";
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271
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272 expl = expl + size.str ('x');
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273 }
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274 else
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275 {
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276 char buf[64];
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277 sprintf (buf, "%d", extent);
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278 expl = "out of bound " + std::string (buf);
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279 }
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280
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281 return expl.c_str ();
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282 }
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283
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284 // ID of error to throw.
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285 const char* id (void) const
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286 {
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287 return (error_id_index_out_of_bounds);
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288 }
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289
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290 void set_size (const dim_vector& size_in) { size = size_in; }
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291
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292 void set_extent (octave_idx_type ext) { extent = ext; }
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293
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294 private:
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295
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296 dim_vector size; // dimension of object being accessed
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297
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298 octave_idx_type extent; // length of dimension being accessed
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299 };
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300
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301 // Complain of an index that is out of range, but we don't know matrix size
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302 void
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303 gripe_index_out_of_range (int nd, int dim, octave_idx_type idx,
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304 octave_idx_type ext)
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305 {
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306 char buf[64];
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307 sprintf (buf, "%d", idx);
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308 out_of_range e (buf, nd, dim);
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309
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310 e.set_extent (ext);
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311 dim_vector d (1,1,1,1,1,1,1); // make explain() give extent not size
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312 e.set_size (d);
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313 throw e;
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314 }
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315
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316 // Complain of an index that is out of range
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317 void
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318 gripe_index_out_of_range (int nd, int dim, octave_idx_type idx,
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319 octave_idx_type ext, const dim_vector& d)
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320 {
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321 char buf[64];
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322 sprintf (buf, "%d", idx);
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323 out_of_range e (buf, nd, dim);
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324
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325 e.set_extent (ext);
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326 e.set_size (d);
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327 throw e;
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328 }
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329
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330 void
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331 gripe_invalid_resize (void)
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332 {
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333 (*current_liboctave_error_with_id_handler)
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334 ("Octave:invalid-resize",
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335 "Invalid resizing operation or ambiguous assignment to an out-of-bounds array element");
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336 }
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337
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338 void
19605
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339 gripe_singular_matrix (double rcond)
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340 {
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341 if (rcond == 0.0)
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342 {
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343 (*current_liboctave_warning_with_id_handler)
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344 (warning_id_singular_matrix,
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345 "matrix singular to machine precision");
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346 }
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347 else
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348 {
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349 (*current_liboctave_warning_with_id_handler)
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350 (warning_id_nearly_singular_matrix,
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351 "matrix singular to machine precision, rcond = %g", rcond);
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352 }
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353 }
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354
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355 /* Tests in test/index.tst */