1 files changed, 93 insertions, 0 deletions
diff --git a/gettext-tools/src/plural-eval.c b/gettext-tools/src/plural-eval.c
new file mode 100644
index 0000000..6c63d4e
--- /dev/null
+++ b/gettext-tools/src/plural-eval.c
@@ -0,0 +1,93 @@
+/* Expression evaluation for plural form selection.
+   Copyright (C) 2000-2003, 2005 Free Software Foundation, Inc.
+   Written by Ulrich Drepper <drepper@cygnus.com>, 2000.
+
+   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/>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Specification.  */
+#include "plural-eval.h"
+
+#include <stddef.h>
+#include <signal.h>
+
+#include "plural-exp.h"
+
+
+#define STATIC /*extern*/
+
+/* Include the expression evaluation code from libintl, this time with
+   'extern' linkage.  */
+#include "eval-plural.h"
+
+
+/* Exit point.  Must be set before calling install_sigfpe_handler().  */
+sigjmp_buf sigfpe_exit;
+
+#if USE_SIGINFO
+
+/* Additional information that is set before sigfpe_exit is invoked.  */
+int sigfpe_code;
+
+/* Signal handler called in case of arithmetic exception (e.g. division
+   by zero) during plural_eval.  */
+static void
+sigfpe_handler (int sig, siginfo_t *sip, void *scp)
+{
+  sigfpe_code = sip->si_code;
+  siglongjmp (sigfpe_exit, 1);
+}
+
+#else
+
+/* Signal handler called in case of arithmetic exception (e.g. division
+   by zero) during plural_eval.  */
+static void
+sigfpe_handler (int sig)
+{
+  siglongjmp (sigfpe_exit, 1);
+}
+
+#endif
+
+void
+install_sigfpe_handler (void)
+{
+#if USE_SIGINFO
+  struct sigaction action;
+  action.sa_sigaction = sigfpe_handler;
+  action.sa_flags = SA_SIGINFO;
+  sigemptyset (&action.sa_mask);
+  sigaction (SIGFPE, &action, (struct sigaction *) NULL);
+#else
+  signal (SIGFPE, sigfpe_handler);
+#endif
+}
+
+void
+uninstall_sigfpe_handler (void)
+{
+#if USE_SIGINFO
+  struct sigaction action;
+  action.sa_handler = SIG_DFL;
+  action.sa_flags = 0;
+  sigemptyset (&action.sa_mask);
+  sigaction (SIGFPE, &action, (struct sigaction *) NULL);
+#else
+  signal (SIGFPE, SIG_DFL);
+#endif
+}