1/* Expression evaluation for plural form selection.
2   Copyright (C) 2005-2006 Free Software Foundation, Inc.
3   Written by Bruno Haible <bruno@clisp.org>, 2005.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 2, or (at your option)
8   any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program; if not, write to the Free Software Foundation,
17   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
18
19#ifndef _PLURAL_EVAL_H
20#define _PLURAL_EVAL_H
21
22
23/* Definition of 'struct expression', and
24   declaration of extract_plural_expression() and plural_eval().  */
25#include "plural-exp.h"
26
27
28/* Protection against signals during plural evaluation.  */
29
30#include <setjmp.h>
31
32/* Some platforms don't have the sigjmp_buf type in <setjmp.h>.  */
33#if defined _MSC_VER || defined __MINGW32__
34/* Native Woe32 API.  */
35# define sigjmp_buf jmp_buf
36# define sigsetjmp(env,savesigs) setjmp (env)
37# define siglongjmp longjmp
38#endif
39
40/* We use siginfo to get precise information about the signal.
41   But siginfo doesn't work on Irix 6.5 and on Cygwin 2005.  */
42#if HAVE_SIGINFO && !defined (__sgi) && !defined (__CYGWIN__)
43# define USE_SIGINFO 1
44#endif
45
46/* Exit point.  Must be set before calling install_sigfpe_handler().  */
47extern sigjmp_buf sigfpe_exit;
48
49#if USE_SIGINFO
50/* Additional information that is set before sigfpe_exit is invoked.  */
51extern int sigfpe_code;
52#endif
53
54/* Protect against signals during plural evaluation.  Must be called around
55   calls to plural_eval().  Must be called in pairs.  */
56extern void install_sigfpe_handler (void);
57extern void uninstall_sigfpe_handler (void);
58
59
60#endif /* _PLURAL_EVAL_H */
61