2 * Copyright (C) 1999-2001 Free Software Foundation, Inc.
3 * This file is part of the GNU LIBICONV Library.
5 * The GNU LIBICONV Library is free software; you can redistribute it
6 * and/or modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * The GNU LIBICONV Library is distributed in the hope that it will be
11 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
17 * If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
18 * Fifth Floor, Boston, MA 02110-1301, USA.
22 * UCS-2-SWAPPED = UCS-2-INTERNAL with inverted endianness
26 ucs2swapped_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
28 /* This function assumes that 'unsigned short' has exactly 16 bits. */
29 if (sizeof(unsigned short) != 2) abort();
32 unsigned short x = *(const unsigned short *)s;
33 x = (x >> 8) | (x << 8);
34 if (x >= 0xd800 && x < 0xe000) {
45 ucs2swapped_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
47 /* This function assumes that 'unsigned short' has exactly 16 bits. */
48 if (sizeof(unsigned short) != 2) abort();
50 if (wc < 0x10000 && !(wc >= 0xd800 && wc < 0xe000)) {
52 unsigned short x = wc;
53 x = (x >> 8) | (x << 8);
54 *(unsigned short *)r = x;