Mercurial > octave
view liboctave/system/dir-ops.h @ 31198:863730dd0f83 stable
nextpow2: Fix for input between 0.5 and 1 (bug #62947).
* scripts/general/nextpow2.m: Switch to a naïve implementation using log2 with
a single output argument and ceil.
author | Markus Mützel <markus.muetzel@gmx.de> |
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date | Wed, 24 Aug 2022 17:15:34 +0200 |
parents | 796f54d4ddbf |
children | e88a07dec498 |
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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_dir_ops_h) #define octave_dir_ops_h 1 #include "octave-config.h" #include <string> #include "str-vec.h" namespace octave { namespace sys { class OCTAVE_API dir_entry { // NOTE: This class cannot be used safely cross-platform (Windows) with // non-ASCII characters in paths. // Consider replacing the implementation using std::filesystem (C++ 17). // In the meantime, consider using sys::get_dirlist instead. public: dir_entry (const std::string& n = "") : m_name (n), m_dir (nullptr), m_fail (false), m_errmsg () { if (! m_name.empty ()) open (); } dir_entry (const dir_entry& d) : m_name (d.m_name), m_dir (d.m_dir), m_fail (d.m_fail), m_errmsg (d.m_errmsg) { } dir_entry& operator = (const dir_entry& d) { if (this != &d) { m_name = d.m_name; m_dir = d.m_dir; m_fail = d.m_fail; m_errmsg = d.m_errmsg; } return *this; } ~dir_entry (void) { close (); } bool open (const std::string& = ""); string_vector read (void); bool close (void); bool ok (void) const { return m_dir && ! m_fail; } operator bool () const { return ok (); } std::string error (void) const { return ok () ? "" : m_errmsg; } static unsigned int max_name_length (void); private: // Name of the directory. std::string m_name; // A pointer to the contents of the directory. We use void here to // avoid possible conflicts with the way some systems declare the // type DIR. void *m_dir; // TRUE means the open for this directory failed. bool m_fail; // If a failure occurs, this contains the system error text. std::string m_errmsg; }; } } #endif