annotate liboctave/array/Array-util.h @ 19009:8d47ce2053f2 draft

Added safety checks to Array::xelem There's no reason to have a method which never checks invariants, ever. Added debugging checks to Array::xelem to help catch and debug out-of-bounds errors and reference overlap * configure.ac: Added configuration option for uniqueness-checking with xelem * jit-typeinfo.cc (octave_jit_paren_scalar): Call const Array::xelem rather than Array::xelem * Array-util.h, Array-util.cc (check_out_of_range): Extract common pattern to method (check_index): Methods to check index is in-bounds (compute_index): Added bool parameter check. does not check bounds when check is false and BOUNDS_CHECKING is off * Array.h, Array.cc (xelem): Use methods from Array-util.h to compute indices (is_unique): Check if this is the only reference to data * CmplxQR.cc, dbleQR.cc, fCmplxQR.cc, floatQR.cc (form): Move second assignment to after the call to xelem * lo-array-gripes.h, lo-array-gripes.cc (gripe_modifying_nonunique): Added error message for when non-const xelem is called on non-unique array
author David Spies <dnspies@gmail.com>
date Mon, 14 Jul 2014 13:07:59 -0600
parents 49a5a4be04a1
children
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1 /*
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2
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3 Copyright (C) 2000-2013 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 3 of the License, or (at your
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10 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 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, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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23 #if !defined (octave_Array_util_h)
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24 #define octave_Array_util_h 1
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25
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26 #include "dim-vector.h"
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27 #include "idx-vector.h"
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28 #include "lo-array-gripes.h"
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30 template <typename T>
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31 class Array;
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32
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33 extern OCTAVE_API bool index_in_bounds (const Array<octave_idx_type>& ra_idx,
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34 const dim_vector& dimensions);
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36 extern OCTAVE_API void increment_index (Array<octave_idx_type>& ra_idx,
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37 const dim_vector& dimensions,
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38 int start_dimension = 0);
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40 extern OCTAVE_API octave_idx_type get_scalar_idx (Array<octave_idx_type>& idx,
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41 dim_vector& dims);
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43 extern OCTAVE_API octave_idx_type num_ones (const Array<octave_idx_type>&
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44 ra_idx);
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46 extern OCTAVE_API bool is_scalar (const dim_vector& dim);
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47
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48 extern OCTAVE_API bool is_vector (const dim_vector& dim);
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50 extern OCTAVE_API bool any_ones (const Array<octave_idx_type>& arr);
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52 extern OCTAVE_API void
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53 check_index_bounds (int nd, int dim, octave_idx_type i, octave_idx_type size);
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55 extern OCTAVE_API void
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56 check_index (octave_idx_type n, const dim_vector& dims);
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58 extern OCTAVE_API void
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59 check_index (octave_idx_type i, octave_idx_type j, const dim_vector& dims);
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61 extern OCTAVE_API void
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62 check_index (octave_idx_type i, octave_idx_type j, octave_idx_type k,
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63 const dim_vector& dims);
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64
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65 extern OCTAVE_API void
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66 check_index (const Array<octave_idx_type>& ra_idx, const dim_vector& dims);
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67
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68 #if defined(BOUNDS_CHECKING)
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69 #define BOUNDS_CHECKING_DEFINED true
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70 #else
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71 #define BOUNDS_CHECKING_DEFINED false
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72 #endif
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74 // These four compute a linear index for given dimensions, throwing
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75 // exceptions on invalid indices if check is true or BOUNDS_CHECKING is defined.
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76 inline octave_idx_type
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77 compute_index (octave_idx_type n, const dim_vector& dims, bool check = true)
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78 {
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79 if (BOUNDS_CHECKING_DEFINED || check)
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80 check_index (n, dims);
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81 return n;
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82 }
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83
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84 inline octave_idx_type
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85 compute_index (octave_idx_type i, octave_idx_type j, const dim_vector& dims,
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86 bool check = true)
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87 {
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88 if (BOUNDS_CHECKING_DEFINED || check)
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89 check_index (i, j, dims);
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90 return j * dims(0) + i;
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91 }
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92
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93 inline octave_idx_type
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94 compute_index (octave_idx_type i, octave_idx_type j, octave_idx_type k,
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95 const dim_vector& dims, bool check = true)
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96 {
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97 if (BOUNDS_CHECKING_DEFINED || check)
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98 check_index (i, j, k, dims);
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99 return (k * dims (1) + j) * dims(0) + i;
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100 }
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101
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102 extern OCTAVE_API octave_idx_type
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103 compute_index (const Array<octave_idx_type>& ra_idx, const dim_vector& dims,
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104 bool check = true);
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105
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106 extern OCTAVE_API Array<octave_idx_type>
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107 conv_to_int_array (const Array<idx_vector>& a);
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108
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109 extern OCTAVE_API Array<idx_vector> conv_to_array (const idx_vector *tmp,
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110 const octave_idx_type len);
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111
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112 extern OCTAVE_API dim_vector freeze (Array<idx_vector>& ra_idx,
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113 const dim_vector& dimensions,
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114 int resize_ok);
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116 extern OCTAVE_API bool vector_equivalent (const dim_vector& dv);
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117
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118 extern OCTAVE_API bool all_ok (const Array<idx_vector>& ra_idx);
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119
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120 extern OCTAVE_API bool any_orig_empty (const Array<idx_vector>& ra_idx);
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121
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122 extern OCTAVE_API bool all_colon_equiv (const Array<idx_vector>& ra_idx,
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123 const dim_vector& frozen_lengths);
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124
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125 extern OCTAVE_API bool all_ones (const Array<octave_idx_type>& arr);
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126
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127 extern OCTAVE_API Array<octave_idx_type>
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128 get_elt_idx (const Array<idx_vector>& ra_idx,
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129 const Array<octave_idx_type>& result_idx);
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130
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131 extern OCTAVE_API Array<octave_idx_type> get_ra_idx (octave_idx_type idx,
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132 const dim_vector& dims);
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133
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134 extern OCTAVE_API dim_vector zero_dims_inquire (const Array<idx_vector>& ia,
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135 const dim_vector& rhdv);
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136
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137 extern OCTAVE_API dim_vector zero_dims_inquire (const idx_vector& i,
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138 const idx_vector& j,
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139 const dim_vector& rhdv);
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140
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141 extern OCTAVE_API idx_vector sub2ind (const dim_vector& dv,
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142 const Array<idx_vector>& idxa);
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143
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144 extern OCTAVE_API Array<idx_vector> ind2sub (const dim_vector& dv,
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145 const idx_vector& idx);
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146
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147 struct
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148 permute_vector
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149 {
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150 octave_idx_type pidx;
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151 octave_idx_type iidx;
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152 };
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153
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154 extern int OCTAVE_API permute_vector_compare (const void *a, const void *b);
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155
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156 #endif