1 /* Set current rounding direction.
2 Copyright (C) 1997, 2000, 2005 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Richard Henderson <rth@tamu.edu>, 1997
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/>. */
20 #include <fenv_libc.h>
23 fesetround (int round
)
30 /* Get the current state. */
31 __asm__
__volatile__("excb; mf_fpcr %0" : "=f"(fpcr
));
33 /* Set the relevant bits. */
34 fpcr
= ((fpcr
& ~FPCR_ROUND_MASK
)
35 | ((unsigned long)round
<< FPCR_ROUND_SHIFT
));
37 /* Put the new state in effect. */
38 __asm__
__volatile__("mt_fpcr %0; excb" : : "f"(fpcr
));
42 libm_hidden_def (fesetround
)