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04277e02 | 1 | /* Copyright (C) 1992-2019 Free Software Foundation, Inc. |
2c6fe0bd | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
2c6fe0bd | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 8 | |
2c6fe0bd UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 | 17 | |
2c6fe0bd | 18 | #include <unistd.h> |
28f540f4 RM |
19 | |
20 | void | |
a5a0310d | 21 | swab (const void *bfrom, void *bto, ssize_t n) |
28f540f4 | 22 | { |
a5a0310d UD |
23 | const char *from = (const char *) bfrom; |
24 | char *to = (char *) bto; | |
25 | ||
63551311 | 26 | n &= ~((ssize_t) 1); |
28f540f4 RM |
27 | while (n > 1) |
28 | { | |
2c6fe0bd | 29 | const char b0 = from[--n], b1 = from[--n]; |
28f540f4 RM |
30 | to[n] = b0; |
31 | to[n + 1] = b1; | |
32 | } | |
33 | } |