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/* Expression evaluation for plural form selection.
Copyright (C) 2005-2006, 2015-2016 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2005.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef _PLURAL_EVAL_H
#define _PLURAL_EVAL_H
/* Definition of 'struct expression', and
declaration of extract_plural_expression() and plural_eval(). */
#include "plural-exp.h"
/* Protection against signals during plural evaluation. */
#include <setjmp.h>
/* Some platforms don't have the sigjmp_buf type in <setjmp.h>. */
#if defined _MSC_VER || defined __MINGW32__
/* Native Woe32 API. */
# define sigjmp_buf jmp_buf
# define sigsetjmp(env,savesigs) setjmp (env)
# define siglongjmp longjmp
#endif
/* We use siginfo to get precise information about the signal.
But siginfo doesn't work on Irix 6.5 and on Cygwin 2005. */
#if HAVE_SIGINFO && !defined (__sgi) && !defined (__CYGWIN__)
# define USE_SIGINFO 1
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* Exit point. Must be set before calling install_sigfpe_handler(). */
extern sigjmp_buf sigfpe_exit;
#if USE_SIGINFO
/* Additional information that is set before sigfpe_exit is invoked. */
extern int sigfpe_code;
#endif
/* Protect against signals during plural evaluation. Must be called around
calls to plural_eval(). Must be called in pairs. */
extern void install_sigfpe_handler (void);
extern void uninstall_sigfpe_handler (void);
#ifdef __cplusplus
}
#endif
#endif /* _PLURAL_EVAL_H */
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