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1/* Store current floating-point environment.
2 Copyright (C) 1997-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Richard Henderson <rth@tamu.edu>, 1997
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
23__fegetenv (fenv_t *envp)
24{
25 unsigned long int fpcr;
26 unsigned long int swcr;
27
28 /* Get status from software and hardware. Note that we don't need an
29 excb because the callsys is an implied trap barrier. */
30 swcr = __ieee_get_fp_control ();
31 __asm__ __volatile__ ("mf_fpcr %0" : "=f" (fpcr));
32
33 /* Merge the two bits of information. */
34 *envp = ((fpcr & FPCR_ROUND_MASK) | (swcr & SWCR_ALL_MASK));
35
36 /* Success. */
37 return 0;
38}
39
40#include <shlib-compat.h>
41#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
42strong_alias (__fegetenv, __old_fegetenv)
43compat_symbol (libm, __old_fegetenv, fegetenv, GLIBC_2_1);
44#endif
45
46libm_hidden_def (__fegetenv)
47versioned_symbol (libm, __fegetenv, fegetenv, GLIBC_2_2);
48libm_hidden_ver(__fegetenv, fegetenv)
49

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