1 /* Install given floating-point environment and raise exceptions for
2    atomic compound assignment.
3    Copyright (C) 2013-2021 Free Software Foundation, Inc.
4    This file is part of the GNU C Library.
5 
6    The GNU C Library is free software; you can redistribute it and/or
7    modify it under the terms of the GNU Lesser General Public
8    License as published by the Free Software Foundation; either
9    version 2.1 of the License, or (at your option) any later version.
10 
11    The GNU C Library is distributed in the hope that it will be useful,
12    but WITHOUT ANY WARRANTY; without even the implied warranty of
13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14    Lesser General Public License for more details.
15 
16    You should have received a copy of the GNU Lesser General Public
17    License along with the GNU C Library.  If not, see
18    <https://www.gnu.org/licenses/>.  */
19 
20 #include "soft-fp.h"
21 #include "soft-supp.h"
22 #include <signal.h>
23 
24 void
__atomic_feupdateenv(const fenv_t * envp)25 __atomic_feupdateenv (const fenv_t *envp)
26 {
27   fenv_union_t u;
28   int saved_exceptions = __sim_exceptions_thread;
29 
30   /* This function postdates the global variables being turned into
31      compat symbols, so no need to set them.  */
32   u.fenv = *envp;
33   __sim_exceptions_thread |= u.l[0];
34   __sim_disabled_exceptions_thread = u.l[1];
35   if (saved_exceptions & ~__sim_disabled_exceptions_thread)
36     raise (SIGFPE);
37 }
38