/* Internal header containing implementation of wcwidth() function. Copyright (C) 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <wchar.h> #include "../wctype/cname-lookup.h" /* Array containing width information. */ extern unsigned char *__ctype_width; static __inline int internal_wcwidth (wint_t ch) { size_t idx; if (ch == L'\0') return 0; idx = cname_lookup (ch); if (idx == ~((size_t) 0)) return -1; return (int) __ctype_width[idx]; }