1 /* Install given floating-point control modes. PowerPC version.
2 Copyright (C) 2016-2018 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
19 #include <fenv_libc.h>
20 #include <fpu_control.h>
22 #define _FPU_MASK_ALL (_FPU_MASK_ZM | _FPU_MASK_OM | _FPU_MASK_UM \
23 | _FPU_MASK_XM | _FPU_MASK_IM)
25 #define FPU_STATUS 0xbffff700ULL
28 fesetmode (const femode_t
*modep
)
30 fenv_union_t old
, new;
32 /* Logic regarding enabled exceptions as in fesetenv. */
35 old
.fenv
= fegetenv_register ();
36 new.l
= (new.l
& ~FPU_STATUS
) | (old
.l
& FPU_STATUS
);
41 if ((old
.l
& _FPU_MASK_ALL
) == 0 && (new.l
& _FPU_MASK_ALL
) != 0)
42 (void) __fe_nomask_env_priv ();
44 if ((old
.l
& _FPU_MASK_ALL
) != 0 && (new.l
& _FPU_MASK_ALL
) == 0)
45 (void) __fe_mask_env ();
47 fesetenv_register (new.fenv
);