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annotate liboctave/Array.h @ 9201:472f0e22aa60

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guard against implicit instantiation
author Jaroslav Hajek <highegg@gmail.com>
date Fri, 15 May 2009 13:24:38 +0200
parents 88bf56bbccca
children 9fd5c56ce57a
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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
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42 // One dimensional array class. Handles the reference counting for
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43 // all the derived classes.
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44
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45 template <class T>
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46 class
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47 Array
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48 {
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49 protected:
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50
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51 //--------------------------------------------------------------------
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52 // The real representation of all arrays.
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53 //--------------------------------------------------------------------
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54
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55 class ArrayRep
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56 {
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57 public:
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58
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59 T *data;
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60 octave_idx_type len;
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61 int count;
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62
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63 ArrayRep (T *d, octave_idx_type l, bool copy = false)
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64 : data (copy ? new T [l] : d), len (l), count (1)
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65 {
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66 if (copy)
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67 std::copy (d, d + l, data);
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68 }
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69
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70 ArrayRep (void) : data (0), len (0), count (1) { }
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71
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72 explicit ArrayRep (octave_idx_type n) : data (new T [n]), len (n), count (1) { }
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73
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74 explicit ArrayRep (octave_idx_type n, const T& val)
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75 : data (new T [n]), len (n), count (1)
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76 {
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77 std::fill (data, data + n, val);
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78 }
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79
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80 ArrayRep (const ArrayRep& a)
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81 : data (new T [a.len]), len (a.len), count (1)
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82 {
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83 std::copy (a.data, a.data + a.len, data);
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84 }
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85
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86 ~ArrayRep (void) { delete [] data; }
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87
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88 octave_idx_type length (void) const { return len; }
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89
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90 private:
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91
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92 // No assignment!
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93
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94 ArrayRep& operator = (const ArrayRep& a);
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95 };
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96
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97 //--------------------------------------------------------------------
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98
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99 public:
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100
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101 void make_unique (void);
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102
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103 typedef T element_type;
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104
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105 typedef bool (*compare_fcn_type) (typename ref_param<T>::type,
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106 typename ref_param<T>::type);
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107
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108 protected:
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109
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110 typename Array<T>::ArrayRep *rep;
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111
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112 dim_vector dimensions;
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113
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114 // Rationale:
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115 // slice_data is a pointer to rep->data, denoting together with slice_len the
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116 // actual portion of the data referenced by this Array<T> object. This allows
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117 // to make shallow copies not only of a whole array, but also of contiguous
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118 // subranges. Every time rep is directly manipulated, slice_data and slice_len
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119 // need to be properly updated.
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120
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121 T* slice_data;
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122 octave_idx_type slice_len;
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123
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124 Array (T *d, octave_idx_type n)
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125 : rep (new typename Array<T>::ArrayRep (d, n)), dimensions (n)
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126 {
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127 slice_data = rep->data;
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128 slice_len = rep->len;
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129 }
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130
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131 Array (T *d, const dim_vector& dv)
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132 : rep (new typename Array<T>::ArrayRep (d, get_size (dv))),
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133 dimensions (dv)
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134 {
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135 slice_data = rep->data;
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136 slice_len = rep->len;
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137 }
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138
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139 // slice constructor
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140 Array (const Array<T>& a, const dim_vector& dv,
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141 octave_idx_type l, octave_idx_type u)
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142 : rep(a.rep), dimensions (dv)
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143 {
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144 rep->count++;
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145 slice_data = a.slice_data + l;
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146 slice_len = std::min (u, a.slice_len) - l;
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147 }
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148
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149 private:
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150
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151 typename Array<T>::ArrayRep *nil_rep (void) const
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152 {
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153 static typename Array<T>::ArrayRep *nr
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154 = new typename Array<T>::ArrayRep ();
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155
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156 return nr;
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157 }
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158
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159 template <class U>
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160 T *
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161 coerce (const U *a, octave_idx_type len)
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162 {
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163 T *retval = new T [len];
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164
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165 for (octave_idx_type i = 0; i < len; i++)
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166 retval[i] = T (a[i]);
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167
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168 return retval;
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169 }
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170
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171 public:
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172
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173 Array (void)
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174 : rep (nil_rep ()), dimensions ()
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175 {
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176 rep->count++;
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177 slice_data = rep->data;
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178 slice_len = rep->len;
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179 }
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180
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181 explicit Array (octave_idx_type n)
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182 : rep (new typename Array<T>::ArrayRep (n)), dimensions (n)
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183 {
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184 slice_data = rep->data;
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185 slice_len = rep->len;
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186 }
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187
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188 explicit Array (octave_idx_type n, const T& val)
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189 : rep (new typename Array<T>::ArrayRep (n)), dimensions (n)
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190 {
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191 slice_data = rep->data;
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192 slice_len = rep->len;
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193 fill (val);
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194 }
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195
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196 // Type conversion case.
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197 template <class U>
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198 Array (const Array<U>& a)
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199 : rep (new typename Array<T>::ArrayRep (coerce (a.data (), a.length ()), a.length ())),
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200 dimensions (a.dims ())
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201 {
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202 slice_data = rep->data;
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203 slice_len = rep->len;
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204 }
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205
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206 // No type conversion case.
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207 Array (const Array<T>& a)
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208 : rep (a.rep), dimensions (a.dimensions)
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209 {
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210 rep->count++;
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211 slice_data = a.slice_data;
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212 slice_len = a.slice_len;
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213 }
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214
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215 public:
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216
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217 Array (const dim_vector& dv)
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218 : rep (new typename Array<T>::ArrayRep (get_size (dv))),
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219 dimensions (dv)
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220 {
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221 slice_data = rep->data;
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222 slice_len = rep->len;
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223 }
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224
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225 Array (const dim_vector& dv, const T& val)
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226 : rep (new typename Array<T>::ArrayRep (get_size (dv))),
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227 dimensions (dv)
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228 {
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229 slice_data = rep->data;
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230 slice_len = rep->len;
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231 fill (val);
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232 }
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233
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234 Array (const Array<T>& a, const dim_vector& dv);
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235
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236 virtual ~Array (void);
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237
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238 Array<T>& operator = (const Array<T>& a);
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239
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240 void fill (const T& val);
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241
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242 octave_idx_type capacity (void) const { return slice_len; }
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243 octave_idx_type length (void) const { return capacity (); }
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244 octave_idx_type nelem (void) const { return capacity (); }
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245 octave_idx_type numel (void) const { return nelem (); }
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246
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247 octave_idx_type dim1 (void) const { return dimensions(0); }
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248 octave_idx_type dim2 (void) const { return dimensions(1); }
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249 octave_idx_type dim3 (void) const { return dimensions(2); }
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250
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251 octave_idx_type rows (void) const { return dim1 (); }
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252 octave_idx_type cols (void) const { return dim2 (); }
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253 octave_idx_type columns (void) const { return dim2 (); }
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254 octave_idx_type pages (void) const { return dim3 (); }
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255
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256 size_t byte_size (void) const { return numel () * sizeof (T); }
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257
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258 // Return a const-reference so that dims ()(i) works efficiently.
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259 const dim_vector& dims (void) const { return dimensions; }
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260
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261 Array<T> squeeze (void) const;
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262
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263 void chop_trailing_singletons (void)
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264 { dimensions.chop_trailing_singletons (); }
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265
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266 static octave_idx_type get_size (octave_idx_type r, octave_idx_type c);
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267 static octave_idx_type get_size (octave_idx_type r, octave_idx_type c, octave_idx_type p);
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268 static octave_idx_type get_size (const dim_vector& dv);
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269
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270 octave_idx_type compute_index (const Array<octave_idx_type>& ra_idx) const;
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271
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272 T range_error (const char *fcn, octave_idx_type n) const;
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273 T& range_error (const char *fcn, octave_idx_type n);
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274
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275 T range_error (const char *fcn, octave_idx_type i, octave_idx_type j) const;
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276 T& range_error (const char *fcn, octave_idx_type i, octave_idx_type j);
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277
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278 T range_error (const char *fcn, octave_idx_type i, octave_idx_type j, octave_idx_type k) const;
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279 T& range_error (const char *fcn, octave_idx_type i, octave_idx_type j, octave_idx_type k);
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280
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281 T range_error (const char *fcn, const Array<octave_idx_type>& ra_idx) const;
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282 T& range_error (const char *fcn, const Array<octave_idx_type>& ra_idx);
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283
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284 // No checking, even for multiple references, ever.
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285
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286 T& xelem (octave_idx_type n) { return slice_data [n]; }
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287 T xelem (octave_idx_type n) const { return slice_data [n]; }
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288
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289 T& xelem (octave_idx_type i, octave_idx_type j) { return xelem (dim1()*j+i); }
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290 T xelem (octave_idx_type i, octave_idx_type j) const { return xelem (dim1()*j+i); }
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291
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292 T& xelem (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return xelem (i, dim2()*k+j); }
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293 T xelem (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return xelem (i, dim2()*k+j); }
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294
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295 T& xelem (const Array<octave_idx_type>& ra_idx)
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296 { return xelem (compute_index (ra_idx)); }
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297
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298 T xelem (const Array<octave_idx_type>& ra_idx) const
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299 { return xelem (compute_index (ra_idx)); }
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300
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301 // FIXME -- would be nice to fix this so that we don't
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302 // unnecessarily force a copy, but that is not so easy, and I see no
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303 // clean way to do it.
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304
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305 T& checkelem (octave_idx_type n)
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306 {
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307 if (n < 0 || n >= slice_len)
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308 return range_error ("T& Array<T>::checkelem", n);
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309 else
2108
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310 {
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311 make_unique ();
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312 return xelem (n);
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313 }
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314 }
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315
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316 T& checkelem (octave_idx_type i, octave_idx_type j)
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317 {
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318 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ())
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319 return range_error ("T& Array<T>::checkelem", i, j);
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320 else
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321 return elem (dim1()*j+i);
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322 }
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323
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324 T& checkelem (octave_idx_type i, octave_idx_type j, octave_idx_type k)
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325 {
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326 if (i < 0 || j < 0 || k < 0 || i >= dim1 () || j >= dim2 () || k >= dim3 ())
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327 return range_error ("T& Array<T>::checkelem", i, j, k);
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328 else
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329 return elem (i, dim2()*k+j);
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330 }
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331
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332 T& checkelem (const Array<octave_idx_type>& ra_idx)
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333 {
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334 octave_idx_type i = compute_index (ra_idx);
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335
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336 if (i < 0)
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337 return range_error ("T& Array<T>::checkelem", ra_idx);
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338 else
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339 return elem (i);
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340 }
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341
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342 T& elem (octave_idx_type n)
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343 {
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344 make_unique ();
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345 return xelem (n);
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346 }
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347
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348 T& elem (octave_idx_type i, octave_idx_type j) { return elem (dim1()*j+i); }
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349
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350 T& elem (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return elem (i, dim2()*k+j); }
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351
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352 T& elem (const Array<octave_idx_type>& ra_idx)
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353 { return Array<T>::elem (compute_index (ra_idx)); }
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354
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355 #if defined (BOUNDS_CHECKING)
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356 T& operator () (octave_idx_type n) { return checkelem (n); }
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357 T& operator () (octave_idx_type i, octave_idx_type j) { return checkelem (i, j); }
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358 T& operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return checkelem (i, j, k); }
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359 T& operator () (const Array<octave_idx_type>& ra_idx) { return checkelem (ra_idx); }
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360 #else
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361 T& operator () (octave_idx_type n) { return elem (n); }
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362 T& operator () (octave_idx_type i, octave_idx_type j) { return elem (i, j); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
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363 T& operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return elem (i, j, k); }
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364 T& operator () (const Array<octave_idx_type>& ra_idx) { return elem (ra_idx); }
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365 #endif
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366
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367 T checkelem (octave_idx_type n) const
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368 {
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369 if (n < 0 || n >= slice_len)
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diff changeset
370 return range_error ("T Array<T>::checkelem", n);
2049
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diff changeset
371 else
2108
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372 return xelem (n);
2006
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373 }
1989
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diff changeset
374
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375 T checkelem (octave_idx_type i, octave_idx_type j) const
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376 {
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377 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ())
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378 return range_error ("T Array<T>::checkelem", i, j);
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379 else
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diff changeset
380 return elem (dim1()*j+i);
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diff changeset
381 }
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382
5275
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383 T checkelem (octave_idx_type i, octave_idx_type j, octave_idx_type k) const
4513
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diff changeset
384 {
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diff changeset
385 if (i < 0 || j < 0 || k < 0 || i >= dim1 () || j >= dim2 () || k >= dim3 ())
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386 return range_error ("T Array<T>::checkelem", i, j, k);
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387 else
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388 return Array<T>::elem (i, Array<T>::dim1()*k+j);
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diff changeset
389 }
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diff changeset
390
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diff changeset
391 T checkelem (const Array<octave_idx_type>& ra_idx) const
4513
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392 {
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393 octave_idx_type i = compute_index (ra_idx);
4513
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diff changeset
394
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diff changeset
395 if (i < 0)
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396 return range_error ("T Array<T>::checkelem", ra_idx);
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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diff changeset
397 else
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diff changeset
398 return Array<T>::elem (i);
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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diff changeset
399 }
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400
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401 T elem (octave_idx_type n) const { return xelem (n); }
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diff changeset
402
5275
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diff changeset
403 T elem (octave_idx_type i, octave_idx_type j) const { return elem (dim1()*j+i); }
4513
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diff changeset
404
5275
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diff changeset
405 T elem (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return elem (i, dim2()*k+j); }
4513
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diff changeset
406
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diff changeset
407 T elem (const Array<octave_idx_type>& ra_idx) const
4513
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408 { return Array<T>::elem (compute_index (ra_idx)); }
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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diff changeset
409
2108
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diff changeset
410 #if defined (BOUNDS_CHECKING)
5275
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411 T operator () (octave_idx_type n) const { return checkelem (n); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
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diff changeset
412 T operator () (octave_idx_type i, octave_idx_type j) const { return checkelem (i, j); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
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diff changeset
413 T operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return checkelem (i, j, k); }
6867
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diff changeset
414 T operator () (const Array<octave_idx_type>& ra_idx) const { return checkelem (ra_idx); }
2006
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diff changeset
415 #else
5275
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416 T operator () (octave_idx_type n) const { return elem (n); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
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diff changeset
417 T operator () (octave_idx_type i, octave_idx_type j) const { return elem (i, j); }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
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diff changeset
418 T operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return elem (i, j, k); }
6867
83619ae96c1d [project @ 2007-09-06 12:08:44 by dbateman]
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diff changeset
419 T operator () (const Array<octave_idx_type>& ra_idx) const { return elem (ra_idx); }
2006
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diff changeset
420 #endif
95e952f72d66 [project @ 1996-03-04 00:33:32 by jwe]
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parents: 2005
diff changeset
421
4567
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parents: 4559
diff changeset
422 Array<T> reshape (const dim_vector& new_dims) const;
fc30061d01da [project @ 2003-10-29 20:11:15 by jwe]
jwe
parents: 4559
diff changeset
423
5275
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diff changeset
424 Array<T> permute (const Array<octave_idx_type>& vec, bool inv = false) const;
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
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diff changeset
425 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
426 { return permute (vec, true); }
77566be8b9e9 [project @ 2003-11-11 17:25:42 by jwe]
jwe
parents: 4587
diff changeset
427
4513
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diff changeset
428 bool is_square (void) const { return (dim1 () == dim2 ()); }
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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parents: 4461
diff changeset
429
4559
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parents: 4548
diff changeset
430 bool is_empty (void) const { return numel () == 0; }
802818bfac91 [project @ 2003-10-28 19:13:43 by jwe]
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parents: 4548
diff changeset
431
9026
6890d411a0b8 adjust some array dim query methods
Jaroslav Hajek <highegg@gmail.com>
parents: 9025
diff changeset
432 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
433
4513
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diff changeset
434 Array<T> transpose (void) const;
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7717
diff changeset
435 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
436
8523
ad3afaaa19c1 implement non-copying contiguous range indexing
Jaroslav Hajek <highegg@gmail.com>
parents: 8503
diff changeset
437 const T *data (void) const { return slice_data; }
228
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438
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439 const T *fortran_vec (void) const { return data (); }
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440
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441 T *fortran_vec (void);
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442
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443 int ndims (void) const { return dimensions.length (); }
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444
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445 void maybe_delete_dims (void);
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446
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447 // Indexing without resizing.
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448
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449 Array<T> index (const idx_vector& i) const;
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450
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451 Array<T> index (const idx_vector& i, const idx_vector& j) const;
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452
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453 Array<T> index (const Array<idx_vector>& ia) const;
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454
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455 static T resize_fill_value ();
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456
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457 // Resizing (with fill).
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458
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459 void resize_fill (octave_idx_type n, const T& rfv);
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460
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461 void resize_fill (octave_idx_type nr, octave_idx_type nc, const T& rfv);
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462
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463 void resize_fill (const dim_vector& dv, const T& rfv);
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464
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465 // Resizing with default fill.
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466 // Rationale:
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467 // These use the default fill value rather than leaving memory uninitialized.
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468 // Resizing without fill leaves the resulting array in a rather weird state,
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469 // where part of the data is initialized an part isn't.
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470
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471 void resize (octave_idx_type n)
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472 { resize_fill (n, resize_fill_value ()); }
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473
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474 // FIXME -- this method cannot be defined here because it would
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475 // clash with
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476 //
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477 // void resize (octave_idx_type, const T&)
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478 //
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479 // (these become indistinguishable when T = octave_idx_type).
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480 // In the future, I think the resize (.., const T& rfv) overloads
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481 // should go away in favor of using resize_fill.
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482
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483 // void resize (octave_idx_type nr, octave_idx_type nc)
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484 // { resize_fill (nr, nc, resize_fill_value ()); }
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485
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486 void resize (dim_vector dv)
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487 { resize_fill (dv, resize_fill_value ()); }
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488
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489 // FIXME -- these are here for backward compatibility. They should
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490 // go away in favor of using resize_fill directly.
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491 void resize (octave_idx_type n, const T& rfv)
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492 { resize_fill (n, static_cast<T> (rfv)); }
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493
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494 void resize (octave_idx_type nr, octave_idx_type nc, const T& rfv)
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495 { resize_fill (nr, nc, rfv); }
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496
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497 void resize (dim_vector dv, const T& rfv)
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498 { resize_fill (dv, rfv); }
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499
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500 // Indexing with possible resizing and fill
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501 // FIXME -- this is really a corner case, that should better be
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502 // handled directly in liboctinterp.
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503
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504 Array<T> index (const idx_vector& i, bool resize_ok,
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505 const T& rfv = resize_fill_value ()) const;
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506
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507 Array<T> index (const idx_vector& i, const idx_vector& j,
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508 bool resize_ok, const T& rfv = resize_fill_value ()) const;
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509
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510 Array<T> index (const Array<idx_vector>& ia,
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511 bool resize_ok, const T& rfv = resize_fill_value ()) const;
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512
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513 // Indexed assignment (always with resize & fill).
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514
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515 void assign (const idx_vector& i, const Array<T>& rhs,
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516 const T& rfv = resize_fill_value ());
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517
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518 void assign (const idx_vector& i, const idx_vector& j, const Array<T>& rhs,
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519 const T& rfv = resize_fill_value ());
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520
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521 void assign (const Array<idx_vector>& ia, const Array<T>& rhs,
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522 const T& rfv = resize_fill_value ());
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523
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524 // Deleting elements.
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525
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526 // A(I) = [] (with a single subscript)
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527 void delete_elements (const idx_vector& i);
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528
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529 // A(:,...,I,...,:) = [] (>= 2 subscripts, one of them is non-colon)
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530 void delete_elements (int dim, const idx_vector& i);
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diff changeset
531
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532 // Dispatcher to the above two.
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533 void delete_elements (const Array<idx_vector>& ia);
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534
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535 // FIXME -- are these required? What exactly are they supposed to do?.
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536
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537 Array<T>& insert (const Array<T>& a, octave_idx_type r, octave_idx_type c);
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538 Array<T>& insert2 (const Array<T>& a, octave_idx_type r, octave_idx_type c);
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539 Array<T>& insertN (const Array<T>& a, octave_idx_type r, octave_idx_type c);
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diff changeset
540
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diff changeset
541 Array<T>& insert (const Array<T>& a, const Array<octave_idx_type>& idx);
3933
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diff changeset
542
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diff changeset
543 void maybe_economize (void)
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544 {
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545 if (rep->count == 1 && slice_len != rep->len)
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546 {
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547 ArrayRep *new_rep = new ArrayRep (slice_data, slice_len, true);
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548 delete rep;
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549 rep = new_rep;
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550 slice_data = rep->data;
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551 }
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552 }
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diff changeset
553
4517
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diff changeset
554 void print_info (std::ostream& os, const std::string& prefix) const;
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diff changeset
555
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556 // Unsafe. This function exists to support the MEX interface.
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557 // You should not use it anywhere else.
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558 void *mex_get_data (void) const { return const_cast<T *> (data ()); }
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diff changeset
559
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diff changeset
560 Array<T> sort (octave_idx_type dim = 0, sortmode mode = ASCENDING) const;
7433
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diff changeset
561 Array<T> sort (Array<octave_idx_type> &sidx, octave_idx_type dim = 0,
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562 sortmode mode = ASCENDING) const;
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parents: 7463
diff changeset
563
8721
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564 // Ordering is auto-detected or can be specified.
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diff changeset
565 sortmode is_sorted (sortmode mode = UNSORTED) const;
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566
e9cb742df9eb imported patch sort3.diff
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567 // Sort by rows returns only indices.
e9cb742df9eb imported patch sort3.diff
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568 Array<octave_idx_type> sort_rows_idx (sortmode mode = ASCENDING) const;
e9cb742df9eb imported patch sort3.diff
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569
e9cb742df9eb imported patch sort3.diff
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570 // Ordering is auto-detected or can be specified.
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diff changeset
571 sortmode is_sorted_rows (sortmode mode = UNSORTED) const;
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diff changeset
572
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573 // Do a binary lookup in a sorted array.
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diff changeset
574 // Mode can be specified or is auto-detected by comparing 1st and last element.
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575 octave_idx_type lookup (const T& value, sortmode mode = UNSORTED) const;
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576
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diff changeset
577 // Ditto, but for an array of values, specializing on long runs.
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diff changeset
578 // If linf is true, the leftmost interval is extended to infinity
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579 // (indices will be >= 1).
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580 // If rinf is true, the rightmost interval is extended to infinity
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581 // (indices will be <= length ()-1).
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diff changeset
582 Array<octave_idx_type> lookup (const Array<T>& values, sortmode mode = UNSORTED,
de16ebeef93d improve lookup, provide Array<T>::lookup
Jaroslav Hajek <highegg@gmail.com>
parents: 8725
diff changeset
583 bool linf = false, bool rinf = false) const;
de16ebeef93d improve lookup, provide Array<T>::lookup
Jaroslav Hajek <highegg@gmail.com>
parents: 8725
diff changeset
584
9025
484756d558d6 add Array<T>::find
Jaroslav Hajek <highegg@gmail.com>
parents: 8998
diff changeset
585 // 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
586 // specifies search from backward.
484756d558d6 add Array<T>::find
Jaroslav Hajek <highegg@gmail.com>
parents: 8998
diff changeset
587 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
588
7620
36594d5bbe13 Move diag function into the octave_value class
David Bateman <dbateman@free.fr>
parents: 7503
diff changeset
589 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
590
7503
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
591 template <class U, class F>
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
592 Array<U>
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
593 map (F fcn) const
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
594 {
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
595 octave_idx_type len = length ();
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
596
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
597 const T *m = data ();
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
598
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
599 Array<U> result (dims ());
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
600 U *p = result.fortran_vec ();
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
601
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
602 for (octave_idx_type i = 0; i < len; i++)
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
603 {
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
604 OCTAVE_QUIT;
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
605
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
606 p[i] = fcn (m[i]);
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
607 }
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
608
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
609 return result;
8c32f95c2639 convert mapper functions to new format
David Bateman <dbateman@free.fr>
parents: 7463
diff changeset
610 }
8998
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
611
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
612 // This is non-breakable map, suitable for fast functions. Efficiency
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
613 // relies on compiler's ability to inline a function pointer. This seems
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
614 // to be OK with recent GCC.
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
615 template <class U>
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
616 Array<U>
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
617 fastmap (U (*fcn) (typename ref_param<T>::type)) const
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
618 {
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
619 octave_idx_type len = length ();
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
620
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
621 const T *m = data ();
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
622
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
623 Array<U> result (dims ());
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
624 U *p = result.fortran_vec ();
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
625
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
626 std::transform (m, m + len, p, fcn);
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
627
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
628 return result;
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
629 }
a48fba01e4ac optimize isnan/isinf/isfinite mappers
Jaroslav Hajek <highegg@gmail.com>
parents: 8950
diff changeset
630
9046
88bf56bbccca make Array::find already return Matlab-compatible dimensions
Jaroslav Hajek <highegg@gmail.com>
parents: 9026
diff changeset
631 template <class U> friend class Array;
9201
472f0e22aa60 guard against implicit instantiation
Jaroslav Hajek <highegg@gmail.com>
parents: 9046
diff changeset
632
472f0e22aa60 guard against implicit instantiation
Jaroslav Hajek <highegg@gmail.com>
parents: 9046
diff changeset
633 private:
472f0e22aa60 guard against implicit instantiation
Jaroslav Hajek <highegg@gmail.com>
parents: 9046
diff changeset
634 static void instantiation_guard ();
4513
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
jwe
parents: 4461
diff changeset
635 };
4459
75ee1995d2b4 [project @ 2003-07-11 17:46:41 by jwe]
jwe
parents: 4192
diff changeset
636
228
ee01ac1c7acc [project @ 1993-11-16 09:56:54 by jwe]
jwe
parents:
diff changeset
637 #endif
ee01ac1c7acc [project @ 1993-11-16 09:56:54 by jwe]
jwe
parents:
diff changeset
638
ee01ac1c7acc [project @ 1993-11-16 09:56:54 by jwe]
jwe
parents:
diff changeset
639 /*
ee01ac1c7acc [project @ 1993-11-16 09:56:54 by jwe]
jwe
parents:
diff changeset
640 ;;; Local Variables: ***
ee01ac1c7acc [project @ 1993-11-16 09:56:54 by jwe]
jwe
parents:
diff changeset
641 ;;; mode: C++ ***
ee01ac1c7acc [project @ 1993-11-16 09:56:54 by jwe]
jwe
parents:
diff changeset
642 ;;; End: ***
ee01ac1c7acc [project @ 1993-11-16 09:56:54 by jwe]
jwe
parents:
diff changeset
643 */