/usr/include/octave-3.8.1/octave/DiagArray2.cc is in liboctave-dev 3.8.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | // Template array classes
/*
Copyright (C) 1996-2013 John W. Eaton
Copyright (C) 2010 VZLU Prague
This file is part of Octave.
Octave is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
Octave is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <cassert>
#include <iostream>
#include <algorithm>
#include "DiagArray2.h"
#include "lo-error.h"
template <class T>
DiagArray2<T>::DiagArray2 (const Array<T>& a, octave_idx_type r,
octave_idx_type c)
: Array<T> (a.as_column ()), d1 (r), d2 (c)
{
octave_idx_type rcmin = std::min (r, c);
if (rcmin != a.length ())
Array<T>::resize (dim_vector (rcmin, 1));
}
template <class T>
Array<T>
DiagArray2<T>::diag (octave_idx_type k) const
{
return extract_diag (k);
}
template <class T>
Array<T>
DiagArray2<T>::extract_diag (octave_idx_type k) const
{
Array<T> d;
if (k == 0)
// The main diagonal is shallow-copied.
d = *this;
else if (k > 0 && k < cols ())
d = Array<T> (dim_vector (std::min (cols () - k, rows ()), 1), T ());
else if (k < 0 && -k < rows ())
d = Array<T> (dim_vector (std::min (rows () + k, cols ()), 1), T ());
else
(*current_liboctave_error_handler)
("diag: requested diagonal out of range");
return d;
}
template <class T>
DiagArray2<T>
DiagArray2<T>::transpose (void) const
{
return DiagArray2<T> (*this, d2, d1);
}
template <class T>
DiagArray2<T>
DiagArray2<T>::hermitian (T (* fcn) (const T&)) const
{
return DiagArray2<T> (Array<T>::template map<T> (fcn), d2, d1);
}
// A two-dimensional array with diagonal elements only.
template <class T>
void
DiagArray2<T>::resize (octave_idx_type r, octave_idx_type c,
const T& rfv)
{
if (r < 0 || c < 0)
{
(*current_liboctave_error_handler) ("can't resize to negative dimensions");
return;
}
if (r != dim1 () || c != dim2 ())
{
Array<T>::resize (dim_vector (std::min (r, c), 1), rfv);
d1 = r; d2 = c;
}
}
template <class T>
Array<T>
DiagArray2<T>::array_value (void) const
{
Array<T> result (dims (), T (0));
for (octave_idx_type i = 0, len = length (); i < len; i++)
result.xelem (i, i) = dgelem (i);
return result;
}
template <typename T>
bool
DiagArray2<T>::check_idx (octave_idx_type r, octave_idx_type c) const
{
bool ok = true;
if (r < 0 || r >= dim1 ())
{
gripe_index_out_of_range (2, 1, r+1, dim1 ());
ok = false;
}
if (c < 0 || c >= dim2 ())
{
gripe_index_out_of_range (2, 2, c+1, dim2 ());
ok = false;
}
return ok;
}
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