Mercurial > octave-nkf
view liboctave/util/byte-swap.h @ 17413:e89e86e1a551
eliminate unnecessary volatile declarations
* byte-swap.h (swap_bytes<T>): Don't declare point arg as volatile.
Update all instantiations.
* data-conv.cc: Delete explicit instantiations of byte_swap template.
author | John W. Eaton <jwe@octave.org> |
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date | Thu, 12 Sep 2013 14:10:41 -0400 |
parents | 648dabbb4c6b |
children | d63878346099 |
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/* Copyright (C) 1996-2012 John W. Eaton 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/>. */ #if !defined (octave_byte_swap_h) #define octave_byte_swap_h 1 static inline void swap_bytes (void *ptr, unsigned int i, unsigned int j) { char *t = static_cast<char *> (ptr); char tmp = t[i]; t[i] = t[j]; t[j] = tmp; } template <int n> void swap_bytes (void *ptr) { for (int i = 0; i < n/2; i++) swap_bytes (ptr, i, n-1-i); } template <> inline void swap_bytes<1> (void *) { } template <> inline void swap_bytes<2> (void *ptr) { swap_bytes (ptr, 0, 1); } template <> inline void swap_bytes<4> (void *ptr) { swap_bytes (ptr, 0, 3); swap_bytes (ptr, 1, 2); } template <> inline void swap_bytes<8> (void *ptr) { swap_bytes (ptr, 0, 7); swap_bytes (ptr, 1, 6); swap_bytes (ptr, 2, 5); swap_bytes (ptr, 3, 4); } template <int n> void swap_bytes (void *ptr, int len) { char *t = static_cast<char *> (ptr); for (int i = 0; i < len; i++) { swap_bytes<n> (t); t += n; } } template <> inline void swap_bytes<1> (void *, int) { } #endif