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annotate liboctave/util/lo-array-errwarn.cc @ 25054:6652d3823428 stable

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maint: Update copyright dates in all source files.
author John W. Eaton <jwe@octave.org>
date Fri, 30 Mar 2018 09:19:05 -0400
parents 194eb4bd202b
children 0360ed7c39a8
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1 /*
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2
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3 Copyright (C) 2016-2018 Rik Wehbring
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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
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9 the Free Software Foundation, either version 3 of the License, or
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10 (at your option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License 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, see
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19 <https://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if defined (HAVE_CONFIG_H)
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24 # include "config.h"
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25 #endif
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26
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27 #include <sstream>
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28
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29 #include "lo-array-errwarn.h"
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30 #include "lo-error.h"
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31
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32 // Text constants used to shorten code below.
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33 static const char *error_id_nonconformant_args = "Octave:nonconformant-args";
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34
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35 static const char *error_id_index_out_of_bounds = "Octave:index-out-of-bounds";
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37 static const char *error_id_invalid_index = "Octave:invalid-index";
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38
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39 static const char *warning_id_nearly_singular_matrix =
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40 "Octave:nearly-singular-matrix";
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41
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42 static const char *warning_id_singular_matrix = "Octave:singular-matrix";
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44 namespace octave
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45 {
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46 void
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47 err_nan_to_logical_conversion (void)
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48 {
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49 (*current_liboctave_error_handler)
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50 ("invalid conversion from NaN to logical");
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51 }
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52
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53 void
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54 err_nan_to_character_conversion (void)
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55 {
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56 (*current_liboctave_error_handler)
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57 ("invalid conversion from NaN to character");
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58 }
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59
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60 void
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61 err_nonconformant (const char *op,
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62 octave_idx_type op1_len, octave_idx_type op2_len)
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63 {
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64 const char *err_id = error_id_nonconformant_args;
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65
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66 (*current_liboctave_error_with_id_handler)
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67 (err_id, "%s: nonconformant arguments (op1 len: %d, op2 len: %d)",
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68 op, op1_len, op2_len);
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69 }
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70
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71 void
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72 err_nonconformant (const char *op,
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73 octave_idx_type op1_nr, octave_idx_type op1_nc,
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74 octave_idx_type op2_nr, octave_idx_type op2_nc)
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75 {
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76 const char *err_id = error_id_nonconformant_args;
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77
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78 (*current_liboctave_error_with_id_handler)
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79 (err_id, "%s: nonconformant arguments (op1 is %dx%d, op2 is %dx%d)",
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80 op, op1_nr, op1_nc, op2_nr, op2_nc);
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81 }
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82
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83 void
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84 err_nonconformant (const char *op,
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85 const dim_vector& op1_dims, const dim_vector& op2_dims)
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86 {
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87 const char *err_id = error_id_nonconformant_args;
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88
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89 std::string op1_dims_str = op1_dims.str ();
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90 std::string op2_dims_str = op2_dims.str ();
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91
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92 (*current_liboctave_error_with_id_handler)
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93 (err_id, "%s: nonconformant arguments (op1 is %s, op2 is %s)",
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94 op, op1_dims_str.c_str (), op2_dims_str.c_str ());
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95 }
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97 void
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98 err_del_index_out_of_range (bool is1d, octave_idx_type idx,
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99 octave_idx_type ext)
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100 {
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101 const char *err_id = error_id_index_out_of_bounds;
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102
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103 (*current_liboctave_error_with_id_handler)
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104 (err_id, "A(%s) = []: index out of bounds: value %d out of bound %d",
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105 is1d ? "I" : "..,I,..", idx, ext);
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106 }
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107
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108 // Common procedures of base class index_exception, thrown whenever an
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109 // object is indexed incorrectly, such as by an index that is out of
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110 // range, negative, fractional, complex, or of a non-numeric type.
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111
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112 std::string
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113 index_exception::message (void) const
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114 {
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115 std::string msg = expression () + ": " + details ();
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116 return msg.c_str ();
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117 }
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118
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119 // Show the expression that caused the error, e.g., "A(-1,_)",
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120 // "A(0+1i)", "A(_,3)". Show how many indices come before/after the
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121 // offending one, e.g., (<error>), (<error>,_), or (_,<error>,...[x5]...)
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122
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123 std::string
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124 index_exception::expression (void) const
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125 {
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126 std::ostringstream buf;
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127
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128 if (var.empty () || var == "<unknown>")
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129 buf << "index ";
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130 else
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131 buf << var;
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132
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133 bool show_parens = dim > 0;
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134
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135 if (show_parens)
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136 {
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137 if (dim < 5)
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138 {
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139 buf << '(';
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140
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141 for (octave_idx_type i = 1; i < dim; i++)
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142 buf << "_,";
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143 }
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144 else
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145 buf << "(...[x" << dim - 1 << "]...";
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146 }
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147
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148 buf << idx ();
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149
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150 if (show_parens)
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151 {
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152 if (nd - dim < 5)
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153 {
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154 for (octave_idx_type i = 0; i < nd - dim; i++)
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155 buf << ",_";
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156
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157 if (nd >= dim)
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158 buf << ')';
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159 }
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160 else
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161 buf << "...[x" << nd - dim << "]...)";
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162 }
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163
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164 return buf.str ();
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165 }
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166
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167 class invalid_index : public index_exception
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168 {
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169 public:
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170
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171 invalid_index (const std::string& value, octave_idx_type ndim,
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172 octave_idx_type dimen)
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173 : index_exception (value, ndim, dimen)
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174 { }
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175
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176 std::string details (void) const
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177 {
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178 #if defined (OCTAVE_ENABLE_64)
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179 return "subscripts must be either integers 1 to (2^63)-1 or logicals";
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180 #else
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181 return "subscripts must be either integers 1 to (2^31)-1 or logicals";
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182 #endif
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183 }
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184
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185 // ID of error to throw
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186 const char * err_id (void) const
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187 {
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188 return error_id_invalid_index;
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189 }
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190 };
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191
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192 // Complain if an index is negative, fractional, or too big.
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193
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194 void
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195 err_invalid_index (const std::string& idx, octave_idx_type nd,
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196 octave_idx_type dim, const std::string&)
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197 {
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198 invalid_index e (idx, nd, dim);
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199
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200 throw e;
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201 }
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202
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203 void
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204 err_invalid_index (octave_idx_type n, octave_idx_type nd,
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205 octave_idx_type dim, const std::string& var)
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206 {
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207 std::ostringstream buf;
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208 buf << n + 1;
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209 err_invalid_index (buf.str (), nd, dim, var);
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210 }
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211
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212 void
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213 err_invalid_index (double n, octave_idx_type nd, octave_idx_type dim,
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214 const std::string& var)
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215 {
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216 std::ostringstream buf;
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217 buf << n + 1;
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218 err_invalid_index (buf.str (), nd, dim, var);
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219 }
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220
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221 // Complain for read access beyond the bounds of an array.
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222
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223 class out_of_range : public index_exception
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224 {
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225 public:
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226
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227 out_of_range (const std::string& value, octave_idx_type nd_in,
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228 octave_idx_type dim_in)
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229 : index_exception (value, nd_in, dim_in), extent (0)
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230 { }
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231
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232 std::string details (void) const
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233 {
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234 std::string expl;
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235
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236 if (nd >= size.ndims ()) // if not an index slice
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237 {
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238 if (var != "")
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239 expl = "but " + var + " has size ";
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240 else
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241 expl = "but object has size ";
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242
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243 expl = expl + size.str ('x');
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244 }
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245 else
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246 {
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247 std::ostringstream buf;
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248 buf << extent;
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249 expl = "out of bound " + buf.str ();
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250 }
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251
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diff changeset
252 return expl;
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253 }
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254
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255 // ID of error to throw.
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256 const char * err_id (void) const
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257 {
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258 return error_id_index_out_of_bounds;
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259 }
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260
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261 void set_size (const dim_vector& size_in) { size = size_in; }
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262
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263 void set_extent (octave_idx_type ext) { extent = ext; }
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264
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265 private:
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266
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267 // Dimension of object being accessed.
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diff changeset
268 dim_vector size;
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269
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270 // Length of dimension being accessed.
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271 octave_idx_type extent;
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272 };
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273
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274 // Complain of an index that is out of range, but we don't know matrix size
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diff changeset
275 void
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diff changeset
276 err_index_out_of_range (int nd, int dim, octave_idx_type idx,
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diff changeset
277 octave_idx_type ext)
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278 {
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279 std::ostringstream buf;
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280 buf << idx;
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281 out_of_range e (buf.str (), nd, dim);
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282
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diff changeset
283 e.set_extent (ext);
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diff changeset
284 // ??? Make details method give extent not size.
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diff changeset
285 e.set_size (dim_vector (1, 1, 1, 1, 1, 1,1));
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diff changeset
286
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diff changeset
287 throw e;
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288 }
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289
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290 // Complain of an index that is out of range
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291 void
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292 err_index_out_of_range (int nd, int dim, octave_idx_type idx,
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293 octave_idx_type ext, const dim_vector& d)
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294 {
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295 std::ostringstream buf;
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296 buf << idx;
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297 out_of_range e (buf.str (), nd, dim);
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298
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299 e.set_extent (ext);
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300 e.set_size (d);
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301
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302 throw e;
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303 }
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304
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305 void
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306 err_invalid_resize (void)
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307 {
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308 (*current_liboctave_error_with_id_handler)
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309 ("Octave:invalid-resize",
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310 "Invalid resizing operation or ambiguous assignment to an out-of-bounds array element");
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311 }
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312
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313 void
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314 warn_singular_matrix (double rcond)
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315 {
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316 if (rcond == 0.0)
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317 {
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318 (*current_liboctave_warning_with_id_handler)
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319 (warning_id_singular_matrix,
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320 "matrix singular to machine precision");
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321 }
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322 else
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323 {
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324 (*current_liboctave_warning_with_id_handler)
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325 (warning_id_nearly_singular_matrix,
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326 "matrix singular to machine precision, rcond = %g", rcond);
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327 }
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328 }
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329 }
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330
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331 /* Tests in test/index.tst */