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1/* Enable floating-point exceptions.
2 Copyright (C) 2000-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Jakub Jelinek <jakub@redhat.com>, 2000.
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 <http://www.gnu.org/licenses/>. */
19
20#include <fenv_libc.h>
21
22int
23feenableexcept (int excepts)
24{
25 unsigned long int new_exc, old_exc;
26
27 new_exc = __ieee_get_fp_control ();
28
29 old_exc = (new_exc & SWCR_ENABLE_MASK) << SWCR_ENABLE_SHIFT;
30 new_exc |= (excepts >> SWCR_ENABLE_SHIFT) & SWCR_ENABLE_MASK;
31
32 __ieee_set_fp_control (new_exc);
33
34 return old_exc;
35}
36

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