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f1d86a93 | 1 | /* Set current rounding direction. |
32c075e1 | 2 | Copyright (C) 1999, 2000, 2005, 2007 Free Software Foundation, Inc. |
f1d86a93 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
f1d86a93 UD |
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 | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
f1d86a93 | 15 | |
41bdb6e2 AJ |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
19 | 02111-1307 USA. */ | |
f1d86a93 UD |
20 | |
21 | #include <fenv.h> | |
22 | ||
23 | int | |
24 | fesetround (int round) | |
25 | { | |
c0ac34e4 | 26 | fenv_t fpsr; |
f1d86a93 UD |
27 | |
28 | if (round & ~3) | |
32c075e1 | 29 | return 1; |
f1d86a93 UD |
30 | |
31 | /* Get the current state. */ | |
32 | __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr)); | |
33 | ||
34 | /* Set the relevant bits. */ | |
c0ac34e4 | 35 | fpsr = (fpsr & ~(3UL << 10)) | ((fenv_t) round << 10); |
f1d86a93 UD |
36 | |
37 | /* Put the new state in effect. */ | |
38 | __asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (fpsr) : "memory"); | |
39 | ||
32c075e1 | 40 | return 0; |
f1d86a93 | 41 | } |
9b8a7277 | 42 | libm_hidden_def (fesetround) |