1 /* Install given floating-point environment and raise exceptions.
2 Copyright (C) 2000-2015 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by David Huggins-Daines <dhd@debian.org>, 2000
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.
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.
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/>. */
24 feupdateenv (const fenv_t
*envp
)
26 union { unsigned long long l
; unsigned int sw
[2]; } s
;
28 /* Get the current exception status */
29 __asm__ ("fstd %%fr0,0(%1) \n\t"
30 "fldd 0(%1),%%fr0 \n\t"
31 : "=m" (s
.l
) : "r" (&s
.l
));
32 memcpy(&temp
, envp
, sizeof(fenv_t
));
33 /* Currently raised exceptions not cleared */
34 temp
.__status_word
|= s
.sw
[0] & (FE_ALL_EXCEPT
<< 27);
35 /* Install new environment. */
40 libm_hidden_def (feupdateenv
)