Mercurial > hg > octave-nkf
annotate liboctave/byte-swap.h @ 9300:fddb9f9f724b
Correct documentation for keyboard function
| author | Rik <rdrider0-list@yahoo.com> |
|---|---|
| date | Wed, 03 Jun 2009 13:21:37 -0700 |
| parents | eb63fbe60fab |
| children | 4c0cdbe0acca |
| rev | line source |
|---|---|
| 1960 | 1 /* |
| 2 | |
| 8920 | 3 Copyright (C) 1996, 1997, 1998, 2004, 2005, 2006, 2007, 2008 John W. Eaton |
| 1960 | 4 |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
| 10 option) any later version. | |
| 1960 | 11 |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 7016 | 18 along with Octave; see the file COPYING. If not, see |
| 19 <http://www.gnu.org/licenses/>. | |
| 1960 | 20 |
| 21 */ | |
| 22 | |
| 23 #if !defined (octave_byte_swap_h) | |
| 24 #define octave_byte_swap_h 1 | |
| 25 | |
| 5775 | 26 // FIXME -- not sure these volatile qualifiers are really |
| 3215 | 27 // needed or appropriate here. |
| 28 | |
| 1960 | 29 static inline void |
| 3215 | 30 swap_bytes (volatile void *ptr, unsigned int i, unsigned int j) |
| 1960 | 31 { |
| 3215 | 32 volatile char *t = static_cast<volatile char *> (ptr); |
| 3145 | 33 |
| 1960 | 34 char tmp = t[i]; |
| 35 t[i] = t[j]; | |
| 36 t[j] = tmp; | |
| 37 } | |
| 38 | |
| 4944 | 39 template <int n> |
| 40 void | |
| 41 swap_bytes (volatile void *ptr) | |
| 1960 | 42 { |
|
8381
ad896677a2e2
implement binary saving of diag & perm matrices
Jaroslav Hajek <highegg@gmail.com>
parents:
7017
diff
changeset
|
43 for (int i = 0; i < n/2; i++) |
| 4944 | 44 swap_bytes (ptr, i, n-1-i); |
| 45 } | |
| 3145 | 46 |
| 4944 | 47 template <> |
| 48 inline void | |
| 49 swap_bytes <1> (volatile void *) | |
| 50 { | |
| 51 } | |
| 52 | |
| 53 template <> | |
| 54 inline void | |
| 55 swap_bytes <2> (volatile void *ptr) | |
| 56 { | |
| 57 swap_bytes (ptr, 0, 1); | |
| 1960 | 58 } |
| 59 | |
| 4944 | 60 template <> |
| 61 inline void | |
| 62 swap_bytes <4> (volatile void *ptr) | |
| 1960 | 63 { |
| 4944 | 64 swap_bytes (ptr, 0, 3); |
| 65 swap_bytes (ptr, 1, 2); | |
| 1960 | 66 } |
| 67 | |
| 4944 | 68 template <> |
| 69 inline void | |
| 70 swap_bytes <8> (volatile void *ptr) | |
| 1960 | 71 { |
| 4944 | 72 swap_bytes (ptr, 0, 7); |
| 73 swap_bytes (ptr, 1, 6); | |
| 74 swap_bytes (ptr, 2, 5); | |
| 75 swap_bytes (ptr, 3, 4); | |
| 1960 | 76 } |
| 77 | |
| 4944 | 78 template <int n> |
| 79 void | |
| 80 swap_bytes (volatile void *ptr, int len) | |
| 1960 | 81 { |
| 3215 | 82 volatile char *t = static_cast<volatile char *> (ptr); |
| 3145 | 83 |
| 1960 | 84 for (int i = 0; i < len; i++) |
| 85 { | |
| 4944 | 86 swap_bytes<n> (t); |
| 87 t += n; | |
| 1960 | 88 } |
| 89 } | |
| 90 | |
| 4944 | 91 template <> |
| 92 inline void | |
| 93 swap_bytes<1> (volatile void *, int) | |
| 1960 | 94 { |
| 95 } | |
| 96 | |
| 97 #endif | |
| 98 | |
| 99 /* | |
| 100 ;;; Local Variables: *** | |
| 101 ;;; mode: C++ *** | |
| 102 ;;; End: *** | |
| 103 */ |