1 /*
2 * Copyright (C) 2016-2017 Andes Technology, Inc.
3 * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
4 */
5
6 /* Set current rounding direction.
7 Copyright (C) 2004-2013 Free Software Foundation, Inc.
8
9 The GNU C Library is free software; you can redistribute it and/or
10 modify it under the terms of the GNU Lesser General Public
11 License as published by the Free Software Foundation; either
12 version 2.1 of the License, or (at your option) any later version.
13
14 The GNU C Library is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
18
19 You should have received a copy of the GNU Lesser General Public
20 License along with the GNU C Library. If not, see
21 <http://www.gnu.org/licenses/>. */
22
23 #include <fenv.h>
24 #include <fpu_control.h>
25
26 int
fesetround(int round)27 fesetround (int round)
28 {
29 #ifdef __NDS32_ABI_2FP_PLUS__
30 fpu_control_t temp;
31 if ((round & ~0x3) != 0)
32 /* ROUND is no valid rounding mode. */
33 return 1;
34
35 _FPU_GETCW (temp);
36 temp = (temp & ~0x3) | round;
37 _FPU_SETCW (temp);
38 return 0;
39 #else
40 return (round != FE_TONEAREST);
41 #endif
42 }
43