Mercurial > octave
view liboctave/array/DiagArray2.h @ 31130:0c637fa9529a
build: Search for python executable with multiple names (bug #62372)
* m4/acinclude.m4 (OCTAVE_PROG_PYTHON): Switch to AC_CHECK_PROGS and search for
a range of possible names for python executable.
author | Rik <rik@octave.org> |
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date | Sat, 09 Jul 2022 09:58:02 -0700 |
parents | 796f54d4ddbf |
children | db8735ee84da 597f3ee61a48 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1996-2022 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // 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 // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if ! defined (octave_DiagArray2_h) #define octave_DiagArray2_h 1 #include "octave-config.h" #include <cassert> #include <cstdlib> #include "Array.h" // Array<T> is inherited privately so that some methods, like index, don't // produce unexpected results. template <typename T> class OCTAVE_API DiagArray2 : protected Array<T> { protected: octave_idx_type m_d1, m_d2; public: using typename Array<T>::element_type; DiagArray2 (void) : Array<T> (), m_d1 (0), m_d2 (0) { } DiagArray2 (octave_idx_type r, octave_idx_type c) : Array<T> (dim_vector (std::min (r, c), 1)), m_d1 (r), m_d2 (c) { } DiagArray2 (octave_idx_type r, octave_idx_type c, const T& val) : Array<T> (dim_vector (std::min (r, c), 1), val), m_d1 (r), m_d2 (c) { } explicit DiagArray2 (const Array<T>& a) : Array<T> (a.as_column ()), m_d1 (a.numel ()), m_d2 (a.numel ()) { } DiagArray2 (const Array<T>& a, octave_idx_type r, octave_idx_type c); DiagArray2 (const DiagArray2<T>& a) : Array<T> (a), m_d1 (a.m_d1), m_d2 (a.m_d2) { } template <typename U> DiagArray2 (const DiagArray2<U>& a) : Array<T> (a.extract_diag ()), m_d1 (a.dim1 ()), m_d2 (a.dim2 ()) { } ~DiagArray2 (void) = default; DiagArray2<T>& operator = (const DiagArray2<T>& a) { if (this != &a) { Array<T>::operator = (a); m_d1 = a.m_d1; m_d2 = a.m_d2; } return *this; } octave_idx_type dim1 (void) const { return m_d1; } octave_idx_type dim2 (void) const { return m_d2; } octave_idx_type rows (void) const { return dim1 (); } octave_idx_type cols (void) const { return dim2 (); } octave_idx_type columns (void) const { return dim2 (); } octave_idx_type diag_length (void) const { return Array<T>::numel (); } // FIXME: a dangerous ambiguity? octave_idx_type length (void) const { return Array<T>::numel (); } octave_idx_type nelem (void) const { return dim1 () * dim2 (); } octave_idx_type numel (void) const { return nelem (); } std::size_t byte_size (void) const { return Array<T>::byte_size (); } dim_vector dims (void) const { return dim_vector (m_d1, m_d2); } bool isempty (void) const { return numel () == 0; } int ndims (void) const { return 2; } OCTAVE_API Array<T> extract_diag (octave_idx_type k = 0) const; DiagArray2<T> build_diag_matrix () const { return DiagArray2<T> (array_value ()); } // Warning: the non-const two-index versions will silently ignore assignments // to off-diagonal elements. T elem (octave_idx_type r, octave_idx_type c) const { return (r == c) ? Array<T>::elem (r) : T (0); } OCTAVE_API T& elem (octave_idx_type r, octave_idx_type c); T dgelem (octave_idx_type i) const { return Array<T>::elem (i); } T& dgelem (octave_idx_type i) { return Array<T>::elem (i); } T checkelem (octave_idx_type r, octave_idx_type c) const { return check_idx (r, c) ? elem (r, c) : T (0); } T operator () (octave_idx_type r, octave_idx_type c) const { return elem (r, c); } T& checkelem (octave_idx_type r, octave_idx_type c); T& operator () (octave_idx_type r, octave_idx_type c) { return elem (r, c); } // No checking. T xelem (octave_idx_type r, octave_idx_type c) const { return (r == c) ? Array<T>::xelem (r) : T (0); } T& dgxelem (octave_idx_type i) { return Array<T>::xelem (i); } T dgxelem (octave_idx_type i) const { return Array<T>::xelem (i); } OCTAVE_API void resize (octave_idx_type n, octave_idx_type m, const T& rfv); void resize (octave_idx_type n, octave_idx_type m) { resize (n, m, Array<T>::resize_fill_value ()); } OCTAVE_API DiagArray2<T> transpose (void) const; OCTAVE_API DiagArray2<T> hermitian (T (*fcn) (const T&) = nullptr) const; OCTAVE_API Array<T> array_value (void) const; const T * data (void) const { return Array<T>::data (); } #if defined (OCTAVE_PROVIDE_DEPRECATED_SYMBOLS) OCTAVE_DEPRECATED (7, "for read-only access, use 'data' method instead") const T * fortran_vec (void) const { return Array<T>::data (); } #endif T * fortran_vec (void) { return Array<T>::fortran_vec (); } void print_info (std::ostream& os, const std::string& prefix) const { Array<T>::print_info (os, prefix); } private: bool check_idx (octave_idx_type r, octave_idx_type c) const; }; #endif