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annotate liboctave/Array.h @ 10350:12884915a8e4

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merge MArray classes & improve Array interface
author Jaroslav Hajek <highegg@gmail.com>
date Sat, 23 Jan 2010 21:41:03 +0100
parents cbc402e64d83
children a3635bc1ea19
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1993
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1 // Template array classes
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2 /*
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3
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4 Copyright (C) 2008, 2009 Jaroslav Hajek
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5 Copyright (C) 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003,
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6 2004, 2005, 2006, 2007 John W. Eaton
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7
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8 This file is part of Octave.
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9
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10 Octave is free software; you can redistribute it and/or modify it
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11 under the terms of the GNU General Public License as published by the
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12 Free Software Foundation; either version 3 of the License, or (at your
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13 option) any later version.
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14
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15 Octave is distributed in the hope that it will be useful, but WITHOUT
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16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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18 for more details.
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19
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20 You should have received a copy of the GNU General Public License
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21 along with Octave; see the file COPYING. If not, see
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22 <http://www.gnu.org/licenses/>.
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23
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24 */
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25
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26 #if !defined (octave_Array_h)
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27 #define octave_Array_h 1
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28
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29 #include <cassert>
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30 #include <cstddef>
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31
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32 #include <algorithm>
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33 #include <iosfwd>
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34
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35 #include "dim-vector.h"
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36 #include "idx-vector.h"
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37 #include "lo-traits.h"
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38 #include "lo-utils.h"
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39 #include "oct-sort.h"
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40 #include "quit.h"
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41 #include "oct-mem.h"
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42
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43 // One dimensional array class. Handles the reference counting for
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44 // all the derived classes.
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45
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46 template <class T>
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47 class
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48 Array
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49 {
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50 protected:
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51
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52 //--------------------------------------------------------------------
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53 // The real representation of all arrays.
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54 //--------------------------------------------------------------------
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55
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56 class ArrayRep
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57 {
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58 public:
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59
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60 T *data;
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61 octave_idx_type len;
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62 int count;
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63
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64 ArrayRep (T *d, octave_idx_type l, bool copy = false)
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65 : data (copy ? no_ctor_new<T> (l) : d), len (l), count (1)
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66 {
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67 if (copy)
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68 copy_or_memcpy (l, d, data);
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69 }
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71 ArrayRep (void) : data (0), len (0), count (1) { }
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72
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73 explicit ArrayRep (octave_idx_type n) : data (no_ctor_new<T> (n)), len (n), count (1) { }
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74
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75 explicit ArrayRep (octave_idx_type n, const T& val)
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76 : data (no_ctor_new<T> (n)), len (n), count (1)
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77 {
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78 fill_or_memset (n, val, data);
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79 }
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80
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81 ArrayRep (const ArrayRep& a)
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82 : data (no_ctor_new<T> (a.len)), len (a.len), count (1)
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83 {
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84 copy_or_memcpy (a.len, a.data, data);
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85 }
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86
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87 ~ArrayRep (void) { no_ctor_delete<T> (data); }
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88
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89 octave_idx_type length (void) const { return len; }
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90
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91 private:
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92
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93 // No assignment!
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94
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95 ArrayRep& operator = (const ArrayRep& a);
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96 };
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97
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98 //--------------------------------------------------------------------
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99
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100 public:
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101
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102 void make_unique (void)
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103 {
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104 if (rep->count > 1)
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105 {
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106 --rep->count;
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107 rep = new ArrayRep (slice_data, slice_len, true);
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108 slice_data = rep->data;
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109 }
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110 }
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111
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112 typedef T element_type;
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113
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114 typedef typename ref_param<T>::type crefT;
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115
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116 typedef bool (*compare_fcn_type) (typename ref_param<T>::type,
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117 typename ref_param<T>::type);
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118
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119 protected:
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120
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121 typename Array<T>::ArrayRep *rep;
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122
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123 dim_vector dimensions;
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124
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125 // Rationale:
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126 // slice_data is a pointer to rep->data, denoting together with slice_len the
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127 // actual portion of the data referenced by this Array<T> object. This allows
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128 // to make shallow copies not only of a whole array, but also of contiguous
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129 // subranges. Every time rep is directly manipulated, slice_data and slice_len
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130 // need to be properly updated.
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131
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132 T* slice_data;
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133 octave_idx_type slice_len;
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134
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135 Array (T *d, octave_idx_type m, octave_idx_type n)
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136 : rep (new typename Array<T>::ArrayRep (d, m*n)), dimensions (m, n)
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137 {
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138 slice_data = rep->data;
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139 slice_len = rep->len;
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140 }
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141
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142 Array (T *d, const dim_vector& dv)
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143 : rep (new typename Array<T>::ArrayRep (d, dv.numel ())),
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144 dimensions (dv)
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145 {
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146 slice_data = rep->data;
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147 slice_len = rep->len;
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148 dimensions.chop_trailing_singletons ();
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149 }
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150
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151 // slice constructor
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152 Array (const Array<T>& a, const dim_vector& dv,
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153 octave_idx_type l, octave_idx_type u)
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154 : rep(a.rep), dimensions (dv)
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155 {
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156 rep->count++;
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157 slice_data = a.slice_data + l;
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158 slice_len = u - l;
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159 dimensions.chop_trailing_singletons ();
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160 }
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161
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162 private:
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163
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164 typename Array<T>::ArrayRep *nil_rep (void) const
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165 {
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166 static typename Array<T>::ArrayRep *nr
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167 = new typename Array<T>::ArrayRep ();
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168
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169 return nr;
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170 }
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171
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172 template <class U>
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173 T *
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174 coerce (const U *a, octave_idx_type len)
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175 {
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176 T *retval = no_ctor_new<T> (len);
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177
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178 for (octave_idx_type i = 0; i < len; i++)
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179 retval[i] = T (a[i]);
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180
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181 return retval;
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182 }
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183
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184 public:
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185
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186 // Empty ctor (0x0).
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187
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188 Array (void)
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189 : rep (nil_rep ()), dimensions ()
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190 {
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191 rep->count++;
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192 slice_data = rep->data;
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193 slice_len = rep->len;
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194 }
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195
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196 // Obsolete 1D ctor (there are no 1D arrays).
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197 explicit Array (octave_idx_type n) GCC_ATTR_DEPRECATED
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198 : rep (new typename Array<T>::ArrayRep (n)), dimensions (n, 1)
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199 {
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200 slice_data = rep->data;
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201 slice_len = rep->len;
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202 }
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203
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204 // 2D uninitialized ctor.
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205 explicit Array (octave_idx_type m, octave_idx_type n)
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206 : rep (), dimensions (m, n)
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207 {
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208 rep = new typename Array<T>::ArrayRep (dimensions.safe_numel ());
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209 slice_data = rep->data;
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210 slice_len = rep->len;
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211 }
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212
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213 // 2D initialized ctor.
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214 explicit Array (octave_idx_type m, octave_idx_type n, const T& val)
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215 : rep (), dimensions (m, n)
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216 {
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217 rep = new typename Array<T>::ArrayRep (dimensions.safe_numel ());
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218 slice_data = rep->data;
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219 slice_len = rep->len;
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220 fill (val);
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221 }
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222
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223 // nD uninitialized ctor.
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224 explicit Array (const dim_vector& dv)
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225 : rep (new typename Array<T>::ArrayRep (dv.safe_numel ())),
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226 dimensions (dv)
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227 {
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228 slice_data = rep->data;
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229 slice_len = rep->len;
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230 dimensions.chop_trailing_singletons ();
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231 }
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232
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233 // nD initialized ctor.
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234 explicit Array (const dim_vector& dv, const T& val)
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235 : rep (new typename Array<T>::ArrayRep (dv.safe_numel ())),
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236 dimensions (dv)
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237 {
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238 slice_data = rep->data;
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239 slice_len = rep->len;
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240 fill (val);
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241 dimensions.chop_trailing_singletons ();
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242 }
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243
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244 // Reshape constructor.
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245 Array (const Array<T>& a, const dim_vector& dv);
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246
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247 // Type conversion case.
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248 template <class U>
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249 Array (const Array<U>& a)
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250 : rep (new typename Array<T>::ArrayRep (coerce (a.data (), a.length ()), a.length ())),
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251 dimensions (a.dims ())
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252 {
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253 slice_data = rep->data;
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254 slice_len = rep->len;
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255 }
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256
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257 // No type conversion case.
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258 Array (const Array<T>& a)
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259 : rep (a.rep), dimensions (a.dimensions)
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260 {
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261 rep->count++;
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262 slice_data = a.slice_data;
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263 slice_len = a.slice_len;
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264 }
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265
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266 public:
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267
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268 ~Array (void)
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269 {
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270 if (--rep->count <= 0)
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271 delete rep;
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272 }
228
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273
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274 Array<T>& operator = (const Array<T>& a)
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275 {
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276 if (this != &a)
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277 {
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278 if (--rep->count <= 0)
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279 delete rep;
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280
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281 rep = a.rep;
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282 rep->count++;
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283
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284 dimensions = a.dimensions;
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285 slice_data = a.slice_data;
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286 slice_len = a.slice_len;
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287 }
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288
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289 return *this;
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290 }
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291
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292 void fill (const T& val);
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293
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294 void clear (void);
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295 void clear (const dim_vector& dv);
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296
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297 void clear (octave_idx_type r, octave_idx_type c)
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298 { clear (dim_vector (r, c)); }
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299
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300 octave_idx_type capacity (void) const { return slice_len; }
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301 octave_idx_type length (void) const { return capacity (); }
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302 octave_idx_type nelem (void) const { return capacity (); }
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303 octave_idx_type numel (void) const { return nelem (); }
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304
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305 octave_idx_type dim1 (void) const { return dimensions(0); }
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306 octave_idx_type dim2 (void) const { return dimensions(1); }
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307 octave_idx_type dim3 (void) const { return dimensions(2); }
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308
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309 // Return the array as a column vector.
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310 Array<T> as_column (void) const
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311 {
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312 Array<T> retval (*this);
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313 if (dimensions.length () != 2 || dimensions(1) != 1)
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314 retval.dimensions = dim_vector (numel (), 1);
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315
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316 return retval;
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317 }
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318
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319 // Return the array as a row vector.
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320 Array<T> as_row (void) const
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321 {
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322 Array<T> retval (*this);
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323 if (dimensions.length () != 2 || dimensions(0) != 1)
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324 retval.dimensions = dim_vector (1, numel ());
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325
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326 return retval;
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327 }
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328
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329 // Return the array as a matrix.
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330 Array<T> as_matrix (void) const
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331 {
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332 Array<T> retval (*this);
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333 if (dimensions.length () != 2)
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334 retval.dimensions = dimensions.redim (2);
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335
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336 return retval;
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337 }
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338
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339 octave_idx_type rows (void) const { return dim1 (); }
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340 octave_idx_type cols (void) const { return dim2 (); }
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341 octave_idx_type columns (void) const { return dim2 (); }
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342 octave_idx_type pages (void) const { return dim3 (); }
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343
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344 size_t byte_size (void) const { return numel () * sizeof (T); }
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345
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346 // Return a const-reference so that dims ()(i) works efficiently.
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347 const dim_vector& dims (void) const { return dimensions; }
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348
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349 Array<T> squeeze (void) const;
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350
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351 void chop_trailing_singletons (void) GCC_ATTR_DEPRECATED
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352 { dimensions.chop_trailing_singletons (); }
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353
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354 octave_idx_type compute_index (const Array<octave_idx_type>& ra_idx) const;
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355
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356 T& range_error (const char *fcn, octave_idx_type n) const;
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357 T& range_error (const char *fcn, octave_idx_type i, octave_idx_type j) const;
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358 T& range_error (const char *fcn, octave_idx_type i, octave_idx_type j, octave_idx_type k) const;
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359 T& range_error (const char *fcn, const Array<octave_idx_type>& ra_idx) const;
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360
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361 // No checking, even for multiple references, ever.
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362
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363 T& xelem (octave_idx_type n) { return slice_data [n]; }
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364 crefT xelem (octave_idx_type n) const { return slice_data [n]; }
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365
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366 T& xelem (octave_idx_type i, octave_idx_type j) { return xelem (dim1()*j+i); }
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367 crefT xelem (octave_idx_type i, octave_idx_type j) const { return xelem (dim1()*j+i); }
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368
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369 T& xelem (octave_idx_type i, octave_idx_type j, octave_idx_type k)
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370 { return xelem (i, dim2()*k+j); }
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371 crefT xelem (octave_idx_type i, octave_idx_type j, octave_idx_type k) const
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372 { return xelem (i, dim2()*k+j); }
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373
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374 T& xelem (const Array<octave_idx_type>& ra_idx)
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375 { return xelem (compute_index (ra_idx)); }
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376
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377 crefT xelem (const Array<octave_idx_type>& ra_idx) const
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378 { return xelem (compute_index (ra_idx)); }
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379
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380 // FIXME -- would be nice to fix this so that we don't
2006
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381 // unnecessarily force a copy, but that is not so easy, and I see no
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382 // clean way to do it.
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383
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384 T& checkelem (octave_idx_type n)
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385 {
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386 if (n < 0 || n >= slice_len)
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387 return range_error ("T& Array<T>::checkelem", n);
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388 else
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389 {
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390 make_unique ();
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391 return xelem (n);
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392 }
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diff changeset
393 }
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394
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395 T& checkelem (octave_idx_type i, octave_idx_type j)
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396 {
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397 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ())
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diff changeset
398 return range_error ("T& Array<T>::checkelem", i, j);
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399 else
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400 return elem (dim1()*j+i);
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401 }
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402
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diff changeset
403 T& checkelem (octave_idx_type i, octave_idx_type j, octave_idx_type k)
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diff changeset
404 {
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diff changeset
405 if (i < 0 || j < 0 || k < 0 || i >= dim1 () || j >= dim2 () || k >= dim3 ())
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diff changeset
406 return range_error ("T& Array<T>::checkelem", i, j, k);
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diff changeset
407 else
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408 return elem (i, dim2()*k+j);
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diff changeset
409 }
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diff changeset
410
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diff changeset
411 T& checkelem (const Array<octave_idx_type>& ra_idx)
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diff changeset
412 {
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diff changeset
413 octave_idx_type i = compute_index (ra_idx);
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diff changeset
414
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diff changeset
415 if (i < 0)
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diff changeset
416 return range_error ("T& Array<T>::checkelem", ra_idx);
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diff changeset
417 else
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diff changeset
418 return elem (i);
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diff changeset
419 }
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diff changeset
420
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diff changeset
421 T& elem (octave_idx_type n)
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diff changeset
422 {
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diff changeset
423 make_unique ();
2109
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diff changeset
424 return xelem (n);
2108
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diff changeset
425 }
2306
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diff changeset
426
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diff changeset
427 T& elem (octave_idx_type i, octave_idx_type j) { return elem (dim1()*j+i); }
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diff changeset
428
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diff changeset
429 T& elem (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return elem (i, dim2()*k+j); }
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diff changeset
430
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diff changeset
431 T& elem (const Array<octave_idx_type>& ra_idx)
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diff changeset
432 { return Array<T>::elem (compute_index (ra_idx)); }
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diff changeset
433
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diff changeset
434 #if defined (BOUNDS_CHECKING)
5275
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diff changeset
435 T& operator () (octave_idx_type n) { return checkelem (n); }
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diff changeset
436 T& operator () (octave_idx_type i, octave_idx_type j) { return checkelem (i, j); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
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diff changeset
437 T& operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return checkelem (i, j, k); }
6867
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diff changeset
438 T& operator () (const Array<octave_idx_type>& ra_idx) { return checkelem (ra_idx); }
2306
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diff changeset
439 #else
5275
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diff changeset
440 T& operator () (octave_idx_type n) { return elem (n); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
441 T& operator () (octave_idx_type i, octave_idx_type j) { return elem (i, j); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
442 T& operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return elem (i, j, k); }
6867
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dbateman
parents: 6708
diff changeset
443 T& operator () (const Array<octave_idx_type>& ra_idx) { return elem (ra_idx); }
2006
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jwe
parents: 2005
diff changeset
444 #endif
95e952f72d66 [project @ 1996-03-04 00:33:32 by jwe]
jwe
parents: 2005
diff changeset
445
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parents: 9921
diff changeset
446 crefT checkelem (octave_idx_type n) const
2006
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jwe
parents: 2005
diff changeset
447 {
8523
ad3afaaa19c1 implement non-copying contiguous range indexing
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parents: 8503
diff changeset
448 if (n < 0 || n >= slice_len)
10312
cbc402e64d83 untabify liboctave header files
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
449 return range_error ("T Array<T>::checkelem", n);
2049
468a96dd03fc [project @ 1996-03-29 20:09:05 by jwe]
jwe
parents: 2023
diff changeset
450 else
10312
cbc402e64d83 untabify liboctave header files
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
451 return xelem (n);
2006
95e952f72d66 [project @ 1996-03-04 00:33:32 by jwe]
jwe
parents: 2005
diff changeset
452 }
1989
a4b0826e240c [project @ 1996-03-02 00:33:22 by jwe]
jwe
parents: 1882
diff changeset
453
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parents: 9921
diff changeset
454 crefT checkelem (octave_idx_type i, octave_idx_type j) const
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
455 {
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
456 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ())
10312
cbc402e64d83 untabify liboctave header files
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
457 return range_error ("T Array<T>::checkelem", i, j);
4513
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jwe
parents: 4461
diff changeset
458 else
10312
cbc402e64d83 untabify liboctave header files
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
459 return elem (dim1()*j+i);
4513
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jwe
parents: 4461
diff changeset
460 }
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
461
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parents: 9921
diff changeset
462 crefT checkelem (octave_idx_type i, octave_idx_type j, octave_idx_type k) const
4513
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jwe
parents: 4461
diff changeset
463 {
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
464 if (i < 0 || j < 0 || k < 0 || i >= dim1 () || j >= dim2 () || k >= dim3 ())
10312
cbc402e64d83 untabify liboctave header files
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parents: 10158
diff changeset
465 return range_error ("T Array<T>::checkelem", i, j, k);
4513
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jwe
parents: 4461
diff changeset
466 else
10312
cbc402e64d83 untabify liboctave header files
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
467 return Array<T>::elem (i, Array<T>::dim1()*k+j);
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
468 }
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
469
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parents: 9921
diff changeset
470 crefT checkelem (const Array<octave_idx_type>& ra_idx) const
4513
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jwe
parents: 4461
diff changeset
471 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
472 octave_idx_type i = compute_index (ra_idx);
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
473
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
474 if (i < 0)
10312
cbc402e64d83 untabify liboctave header files
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
475 return range_error ("T Array<T>::checkelem", ra_idx);
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
476 else
10312
cbc402e64d83 untabify liboctave header files
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
477 return Array<T>::elem (i);
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
478 }
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
479
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parents: 9921
diff changeset
480 crefT elem (octave_idx_type n) const { return xelem (n); }
2306
2fbf9bb1cd7a [project @ 1996-07-09 16:49:03 by jwe]
jwe
parents: 2109
diff changeset
481
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Jaroslav Hajek <highegg@gmail.com>
parents: 9921
diff changeset
482 crefT elem (octave_idx_type i, octave_idx_type j) const { return elem (dim1()*j+i); }
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
483
10075
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Jaroslav Hajek <highegg@gmail.com>
parents: 9921
diff changeset
484 crefT elem (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return elem (i, dim2()*k+j); }
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
485
10075
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Jaroslav Hajek <highegg@gmail.com>
parents: 9921
diff changeset
486 crefT elem (const Array<octave_idx_type>& ra_idx) const
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
487 { return Array<T>::elem (compute_index (ra_idx)); }
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
488
2108
2b67abb63030 [project @ 1996-04-30 10:44:17 by jwe]
jwe
parents: 2049
diff changeset
489 #if defined (BOUNDS_CHECKING)
10075
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Jaroslav Hajek <highegg@gmail.com>
parents: 9921
diff changeset
490 crefT operator () (octave_idx_type n) const { return checkelem (n); }
84b0725f4b09 return class types by reference in const Array element access functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9921
diff changeset
491 crefT operator () (octave_idx_type i, octave_idx_type j) const { return checkelem (i, j); }
84b0725f4b09 return class types by reference in const Array element access functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9921
diff changeset
492 crefT operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return checkelem (i, j, k); }
84b0725f4b09 return class types by reference in const Array element access functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9921
diff changeset
493 crefT operator () (const Array<octave_idx_type>& ra_idx) const { return checkelem (ra_idx); }
2006
95e952f72d66 [project @ 1996-03-04 00:33:32 by jwe]
jwe
parents: 2005
diff changeset
494 #else
10075
84b0725f4b09 return class types by reference in const Array element access functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9921
diff changeset
495 crefT operator () (octave_idx_type n) const { return elem (n); }
84b0725f4b09 return class types by reference in const Array element access functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9921
diff changeset
496 crefT operator () (octave_idx_type i, octave_idx_type j) const { return elem (i, j); }
84b0725f4b09 return class types by reference in const Array element access functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9921
diff changeset
497 crefT operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return elem (i, j, k); }
84b0725f4b09 return class types by reference in const Array element access functions
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parents: 9921
diff changeset
498 crefT operator () (const Array<octave_idx_type>& ra_idx) const { return elem (ra_idx); }
2006
95e952f72d66 [project @ 1996-03-04 00:33:32 by jwe]
jwe
parents: 2005
diff changeset
499 #endif
95e952f72d66 [project @ 1996-03-04 00:33:32 by jwe]
jwe
parents: 2005
diff changeset
500
9731
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
501 // Fast extractors. All of these produce shallow copies.
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
502 // Warning: none of these do check bounds, unless BOUNDS_CHECKING is on!
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
503
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
504 // Extract column: A(:,k+1).
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
505 Array<T> column (octave_idx_type k) const;
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
506 // Extract page: A(:,:,k+1).
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
507 Array<T> page (octave_idx_type k) const;
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
508
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
509 // Give this array as a column vector: A(:).
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
510 Array<T> linearize (void) const;
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
511
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
512 // Extract a slice from this array as a column vector: A(:)(lo+1:up).
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
513 // Must be 0 <= lo && up <= numel. May be up < lo.
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
514 Array<T> linear_slice (octave_idx_type lo, octave_idx_type up) const;
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
515
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
516 Array<T> reshape (const dim_vector& new_dims) const
7b9cbaad68d6 extend Array<T>
Jaroslav Hajek <highegg@gmail.com>
parents: 9725
diff changeset
517 { return Array<T> (*this, new_dims); }
4567
fc30061d01da [project @ 2003-10-29 20:11:15 by jwe]
jwe
parents: 4559
diff changeset
518
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
519 Array<T> permute (const Array<octave_idx_type>& vec, bool inv = false) const;
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
520 Array<T> ipermute (const Array<octave_idx_type>& vec) const
4593
77566be8b9e9 [project @ 2003-11-11 17:25:42 by jwe]
jwe
parents: 4587
diff changeset
521 { return permute (vec, true); }
77566be8b9e9 [project @ 2003-11-11 17:25:42 by jwe]
jwe
parents: 4587
diff changeset
522
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
523 bool is_square (void) const { return (dim1 () == dim2 ()); }
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
524
4559
802818bfac91 [project @ 2003-10-28 19:13:43 by jwe]
jwe
parents: 4548
diff changeset
525 bool is_empty (void) const { return numel () == 0; }
802818bfac91 [project @ 2003-10-28 19:13:43 by jwe]
jwe
parents: 4548
diff changeset
526
9026
6890d411a0b8 adjust some array dim query methods
Jaroslav Hajek <highegg@gmail.com>
parents: 9025
diff changeset
527 bool is_vector (void) const { return dimensions.is_vector (); }
6890d411a0b8 adjust some array dim query methods
Jaroslav Hajek <highegg@gmail.com>
parents: 9025
diff changeset
528
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
529 Array<T> transpose (void) const;
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7717
diff changeset
530 Array<T> hermitian (T (*fcn) (const T&) = 0) const;
238
780cbbc57b7c [project @ 1993-11-30 20:23:04 by jwe]
jwe
parents: 228
diff changeset
531
8523
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
532 const T *data (void) const { return slice_data; }
228
ee01ac1c7acc [project @ 1993-11-16 09:56:54 by jwe]
jwe
parents:
diff changeset
533
3952
945e8c160191 [project @ 2002-05-23 17:18:12 by jwe]
jwe
parents: 3944
diff changeset
534 const T *fortran_vec (void) const { return data (); }
945e8c160191 [project @ 2002-05-23 17:18:12 by jwe]
jwe
parents: 3944
diff changeset
535
238
780cbbc57b7c [project @ 1993-11-30 20:23:04 by jwe]
jwe
parents: 228
diff changeset
536 T *fortran_vec (void);
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1550
diff changeset
537
9546
1beb23d2b892 optimize op= in common cases
Jaroslav Hajek <highegg@gmail.com>
parents: 9341
diff changeset
538 bool is_shared (void) { return rep->count > 1; }
1beb23d2b892 optimize op= in common cases
Jaroslav Hajek <highegg@gmail.com>
parents: 9341
diff changeset
539
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
540 int ndims (void) const { return dimensions.length (); }
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1550
diff changeset
541
4517
b4449b1193ac [project @ 2003-09-20 02:06:06 by jwe]
jwe
parents: 4513
diff changeset
542 void maybe_delete_dims (void);
b4449b1193ac [project @ 2003-09-20 02:06:06 by jwe]
jwe
parents: 4513
diff changeset
543
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
544 // Indexing without resizing.
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
545
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
546 Array<T> index (const idx_vector& i) const;
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1550
diff changeset
547
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
548 Array<T> index (const idx_vector& i, const idx_vector& j) const;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
549
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
550 Array<T> index (const Array<idx_vector>& ia) const;
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1550
diff changeset
551
10350
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10312
diff changeset
552 static const T& resize_fill_value ();
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
553
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
554 // Resizing (with fill).
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1550
diff changeset
555
10350
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10312
diff changeset
556 void resize1 (octave_idx_type n, const T& rfv = resize_fill_value ());
1560
27a03373de41 [project @ 1995-10-12 07:22:26 by jwe]
jwe
parents: 1550
diff changeset
557
10350
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10312
diff changeset
558 void resize (octave_idx_type n) GCC_ATTR_DEPRECATED
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10312
diff changeset
559 { resize1 (n); }
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
560
10350
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10312
diff changeset
561 void resize (octave_idx_type nr, octave_idx_type nc,
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10312
diff changeset
562 const T& rfv = resize_fill_value ());
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
563
10350
12884915a8e4 merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents: 10312
diff changeset
564 void resize (const dim_vector& dv, const T& rfv = resize_fill_value ());
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
565
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
566 // Indexing with possible resizing and fill
8333
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8290
diff changeset
567 // FIXME -- this is really a corner case, that should better be
9238637cb81c style fixes
John W. Eaton <jwe@octave.org>
parents: 8290
diff changeset
568 // handled directly in liboctinterp.
3933
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
jwe
parents: 3928
diff changeset
569
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
570 Array<T> index (const idx_vector& i, bool resize_ok,
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
571 const T& rfv = resize_fill_value ()) const;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
572
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
573 Array<T> index (const idx_vector& i, const idx_vector& j,
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
574 bool resize_ok, const T& rfv = resize_fill_value ()) const;
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
575
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
576 Array<T> index (const Array<idx_vector>& ia,
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
577 bool resize_ok, const T& rfv = resize_fill_value ()) const;
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
578
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
579 // Indexed assignment (always with resize & fill).
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
580
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
581 void assign (const idx_vector& i, const Array<T>& rhs,
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
582 const T& rfv = resize_fill_value ());
4513
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jwe
parents: 4461
diff changeset
583
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
584 void assign (const idx_vector& i, const idx_vector& j, const Array<T>& rhs,
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
585 const T& rfv = resize_fill_value ());
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
586
7cbe01c21986 improve dense array indexing
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parents: 8179
diff changeset
587 void assign (const Array<idx_vector>& ia, const Array<T>& rhs,
7cbe01c21986 improve dense array indexing
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parents: 8179
diff changeset
588 const T& rfv = resize_fill_value ());
7cbe01c21986 improve dense array indexing
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parents: 8179
diff changeset
589
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
590 // Deleting elements.
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
591
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
592 // A(I) = [] (with a single subscript)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
593 void delete_elements (const idx_vector& i);
4530
e8d87fefd144 [project @ 2003-10-07 04:02:04 by jwe]
jwe
parents: 4518
diff changeset
594
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
595 // A(:,...,I,...,:) = [] (>= 2 subscripts, one of them is non-colon)
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
596 void delete_elements (int dim, const idx_vector& i);
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
597
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
598 // Dispatcher to the above two.
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
599 void delete_elements (const Array<idx_vector>& ia);
4513
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jwe
parents: 4461
diff changeset
600
10115
ed49cef7e005 simplify Array::insert methods
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parents: 10095
diff changeset
601 // Insert an array into another at a specified position.
ed49cef7e005 simplify Array::insert methods
Jaroslav Hajek <highegg@gmail.com>
parents: 10095
diff changeset
602 // If size (a) is [d1 d2 ... dN] and idx is [i1 i2 ... iN],
ed49cef7e005 simplify Array::insert methods
Jaroslav Hajek <highegg@gmail.com>
parents: 10095
diff changeset
603 // this method is equivalent to
ed49cef7e005 simplify Array::insert methods
Jaroslav Hajek <highegg@gmail.com>
parents: 10095
diff changeset
604 // x(i1:i1+d1-1, i2:i2+d2-1, ... , iN:iN+dN-1) = a.
ed49cef7e005 simplify Array::insert methods
Jaroslav Hajek <highegg@gmail.com>
parents: 10095
diff changeset
605 Array<T>& insert (const Array<T>& a, const Array<octave_idx_type>& idx);
3928
e8627dc4bdf2 [project @ 2002-05-03 19:56:01 by jwe]
jwe
parents: 3836
diff changeset
606
10115
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Jaroslav Hajek <highegg@gmail.com>
parents: 10095
diff changeset
607 // This is just a special case for idx = [r c 0 ...]
8290
7cbe01c21986 improve dense array indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8179
diff changeset
608 Array<T>& insert (const Array<T>& a, octave_idx_type r, octave_idx_type c);
3933
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
jwe
parents: 3928
diff changeset
609
8523
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
610 void maybe_economize (void)
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
611 {
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
612 if (rep->count == 1 && slice_len != rep->len)
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
613 {
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
614 ArrayRep *new_rep = new ArrayRep (slice_data, slice_len, true);
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
615 delete rep;
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
616 rep = new_rep;
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Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
617 slice_data = rep->data;
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
618 }
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
619 }
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
620
4517
b4449b1193ac [project @ 2003-09-20 02:06:06 by jwe]
jwe
parents: 4513
diff changeset
621 void print_info (std::ostream& os, const std::string& prefix) const;
5900
c20eb7330d13 [project @ 2006-07-22 08:31:16 by jwe]
jwe
parents: 5775
diff changeset
622
c20eb7330d13 [project @ 2006-07-22 08:31:16 by jwe]
jwe
parents: 5775
diff changeset
623 // Unsafe. This function exists to support the MEX interface.
c20eb7330d13 [project @ 2006-07-22 08:31:16 by jwe]
jwe
parents: 5775
diff changeset
624 // You should not use it anywhere else.
c20eb7330d13 [project @ 2006-07-22 08:31:16 by jwe]
jwe
parents: 5775
diff changeset
625 void *mex_get_data (void) const { return const_cast<T *> (data ()); }
7433
402168152bb9 [project @ 2008-01-31 18:59:09 by dbateman]
dbateman
parents: 7017
diff changeset
626
9725
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9653
diff changeset
627 Array<T> sort (int dim = 0, sortmode mode = ASCENDING) const;
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9653
diff changeset
628 Array<T> sort (Array<octave_idx_type> &sidx, int dim = 0,
10312
cbc402e64d83 untabify liboctave header files
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
629 sortmode mode = ASCENDING) const;
7503
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
630
8721
e9cb742df9eb imported patch sort3.diff
Jaroslav Hajek <highegg@gmail.com>
parents: 8700
diff changeset
631 // Ordering is auto-detected or can be specified.
e9cb742df9eb imported patch sort3.diff
Jaroslav Hajek <highegg@gmail.com>
parents: 8700
diff changeset
632 sortmode is_sorted (sortmode mode = UNSORTED) const;
e9cb742df9eb imported patch sort3.diff
Jaroslav Hajek <highegg@gmail.com>
parents: 8700
diff changeset
633
e9cb742df9eb imported patch sort3.diff
Jaroslav Hajek <highegg@gmail.com>
parents: 8700
diff changeset
634 // Sort by rows returns only indices.
e9cb742df9eb imported patch sort3.diff
Jaroslav Hajek <highegg@gmail.com>
parents: 8700
diff changeset
635 Array<octave_idx_type> sort_rows_idx (sortmode mode = ASCENDING) const;
e9cb742df9eb imported patch sort3.diff
Jaroslav Hajek <highegg@gmail.com>
parents: 8700
diff changeset
636
e9cb742df9eb imported patch sort3.diff
Jaroslav Hajek <highegg@gmail.com>
parents: 8700
diff changeset
637 // Ordering is auto-detected or can be specified.
e9cb742df9eb imported patch sort3.diff
Jaroslav Hajek <highegg@gmail.com>
parents: 8700
diff changeset
638 sortmode is_sorted_rows (sortmode mode = UNSORTED) const;
e9cb742df9eb imported patch sort3.diff
Jaroslav Hajek <highegg@gmail.com>
parents: 8700
diff changeset
639
9921
7c8392a034e6 fix & improve lookup API
Jaroslav Hajek <highegg@gmail.com>
parents: 9878
diff changeset
640 // Do a binary lookup in a sorted array. Must not contain NaNs.
8814
de16ebeef93d improve lookup, provide Array<T>::lookup
Jaroslav Hajek <highegg@gmail.com>
parents: 8725
diff changeset
641 // Mode can be specified or is auto-detected by comparing 1st and last element.
de16ebeef93d improve lookup, provide Array<T>::lookup
Jaroslav Hajek <highegg@gmail.com>
parents: 8725
diff changeset
642 octave_idx_type lookup (const T& value, sortmode mode = UNSORTED) const;
de16ebeef93d improve lookup, provide Array<T>::lookup
Jaroslav Hajek <highegg@gmail.com>
parents: 8725
diff changeset
643
9921
7c8392a034e6 fix & improve lookup API
Jaroslav Hajek <highegg@gmail.com>
parents: 9878
diff changeset
644 // Ditto, but for an array of values, specializing on the case when values
7c8392a034e6 fix & improve lookup API
Jaroslav Hajek <highegg@gmail.com>
parents: 9878
diff changeset
645 // are sorted. NaNs get the value N.
7c8392a034e6 fix & improve lookup API
Jaroslav Hajek <highegg@gmail.com>
parents: 9878
diff changeset
646 Array<octave_idx_type> lookup (const Array<T>& values, sortmode mode = UNSORTED) const;
9341
9fd5c56ce57a extend lookup capabilities
Jaroslav Hajek <highegg@gmail.com>
parents: 9201
diff changeset
647
9878
ead4f9c82a9a implement Array<T>::nnz
Jaroslav Hajek <highegg@gmail.com>
parents: 9840
diff changeset
648 // Count nonzero elements.
ead4f9c82a9a implement Array<T>::nnz
Jaroslav Hajek <highegg@gmail.com>
parents: 9840
diff changeset
649 octave_idx_type nnz (void) const;
ead4f9c82a9a implement Array<T>::nnz
Jaroslav Hajek <highegg@gmail.com>
parents: 9840
diff changeset
650
9025
484756d558d6 add Array<T>::find
Jaroslav Hajek <highegg@gmail.com>
parents: 8998
diff changeset
651 // Find indices of (at most n) nonzero elements. If n is specified, backward
484756d558d6 add Array<T>::find
Jaroslav Hajek <highegg@gmail.com>
parents: 8998
diff changeset
652 // specifies search from backward.
484756d558d6 add Array<T>::find
Jaroslav Hajek <highegg@gmail.com>
parents: 8998
diff changeset
653 Array<octave_idx_type> find (octave_idx_type n = -1, bool backward = false) const;
484756d558d6 add Array<T>::find
Jaroslav Hajek <highegg@gmail.com>
parents: 8998
diff changeset
654
9725
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9653
diff changeset
655 // Returns the n-th element in increasing order, using the same ordering as
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9653
diff changeset
656 // used for sort. n can either be a scalar index or a contiguous range.
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9653
diff changeset
657 Array<T> nth_element (const idx_vector& n, int dim = 0) const;
aea3a3a950e1 implement nth_element
Jaroslav Hajek <highegg@gmail.com>
parents: 9653
diff changeset
658
7620
36594d5bbe13 Move diag function into the octave_value class
David Bateman <dbateman@free.fr>
parents: 7503
diff changeset
659 Array<T> diag (octave_idx_type k = 0) const;
36594d5bbe13 Move diag function into the octave_value class
David Bateman <dbateman@free.fr>
parents: 7503
diff changeset
660
7503
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
661 template <class U, class F>
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
662 Array<U>
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
663 map (F fcn) const
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
664 {
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
665 octave_idx_type len = length ();
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
666
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
667 const T *m = data ();
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
668
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
669 Array<U> result (dims ());
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
670 U *p = result.fortran_vec ();
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
671
9812
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
672 octave_idx_type i;
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
673 for (i = 0; i < len - 3; i += 4)
7503
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
674 {
10312
cbc402e64d83 untabify liboctave header files
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
675 octave_quit ();
7503
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
676
9812
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
677 p[i] = fcn (m[i]);
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
678 p[i+1] = fcn (m[i+1]);
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
679 p[i+2] = fcn (m[i+2]);
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
680 p[i+3] = fcn (m[i+3]);
7503
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
681 }
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
682
10142
829e69ec3110 make OCTAVE_QUIT a function
Jaroslav Hajek <highegg@gmail.com>
parents: 10115
diff changeset
683 octave_quit ();
9812
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
684
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
685 for (; i < len; i++)
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
686 p[i] = fcn (m[i]);
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
687
7503
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
688 return result;
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
689 }
8998
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
690
9812
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
691 // Overloads for function references.
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
692 template <class U>
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
693 Array<U>
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
694 map (U (&fcn) (T)) const
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
695 { return map<U, U (&) (T)> (fcn); }
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
696
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
697 template <class U>
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
698 Array<U>
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
699 map (U (&fcn) (const T&)) const
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
700 { return map<U, U (&) (const T&)> (fcn); }
f80c566bc751 improve unary mapper system
Jaroslav Hajek <highegg@gmail.com>
parents: 9800
diff changeset
701
9046
88bf56bbccca make Array::find already return Matlab-compatible dimensions
Jaroslav Hajek <highegg@gmail.com>
parents: 9026
diff changeset
702 template <class U> friend class Array;
9201
472f0e22aa60 guard against implicit instantiation
Jaroslav Hajek <highegg@gmail.com>
parents: 9046
diff changeset
703
472f0e22aa60 guard against implicit instantiation
Jaroslav Hajek <highegg@gmail.com>
parents: 9046
diff changeset
704 private:
472f0e22aa60 guard against implicit instantiation
Jaroslav Hajek <highegg@gmail.com>
parents: 9046
diff changeset
705 static void instantiation_guard ();
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
706 };
4459
75ee1995d2b4 [project @ 2003-07-11 17:46:41 by jwe]
jwe
parents: 4192
diff changeset
707
9653
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
708 // This is a simple wrapper template that will subclass an Array<T> type or any
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
709 // later type derived from it and override the default non-const operator() to
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
710 // not check for the array's uniqueness. It is, however, the user's
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
711 // responsibility to ensure the array is actually unaliased whenever elements
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
712 // are accessed.
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
713
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
714 template<class ArrayClass>
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
715 class NoAlias : public ArrayClass
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
716 {
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
717 typedef typename ArrayClass::element_type T;
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
718 public:
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
719 NoAlias () : ArrayClass () { }
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
720
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
721 // FIXME: this would be simpler once C++0x is available
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
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722 template <class X>
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
723 explicit NoAlias (X x) : ArrayClass (x) { }
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
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724
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
725 template <class X, class Y>
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
726 explicit NoAlias (X x, Y y) : ArrayClass (x, y) { }
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
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727
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
728 template <class X, class Y, class Z>
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
729 explicit NoAlias (X x, Y y, Z z) : ArrayClass (x, y, z) { }
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
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730
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
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731 T& operator () (octave_idx_type n)
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
732 { return ArrayClass::xelem (n); }
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
733 T& operator () (octave_idx_type i, octave_idx_type j)
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
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734 { return ArrayClass::xelem (i, j); }
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
735 T& operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k)
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
736 { return ArrayClass::xelem (i, j, k); }
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
737 T& operator () (const Array<octave_idx_type>& ra_idx)
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
738 { return ArrayClass::xelem (ra_idx); }
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
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739 };
e087d7c77ff9 improve linspace in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 9624
diff changeset
740
9732
b4fdfee405b5 remove ArrayN<T> + fix nonhom. diag-scalar ops
Jaroslav Hajek <highegg@gmail.com>
parents: 9731
diff changeset
741 template <class T>
b4fdfee405b5 remove ArrayN<T> + fix nonhom. diag-scalar ops
Jaroslav Hajek <highegg@gmail.com>
parents: 9731
diff changeset
742 std::ostream&
b4fdfee405b5 remove ArrayN<T> + fix nonhom. diag-scalar ops
Jaroslav Hajek <highegg@gmail.com>
parents: 9731
diff changeset
743 operator << (std::ostream& os, const Array<T>& a);
b4fdfee405b5 remove ArrayN<T> + fix nonhom. diag-scalar ops
Jaroslav Hajek <highegg@gmail.com>
parents: 9731
diff changeset
744
9773
01f897d8a130 optimize memory manipulation by arrays & indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 9732
diff changeset
745 #endif