1 /* Determine floating-point rounding mode within libc. Alpha version.
2 Copyright (C) 2012-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
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.
9
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.
14
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 <https://www.gnu.org/licenses/>. */
18
19 #ifndef ALPHA_GET_ROUNDING_MODE_H
20 #define ALPHA_GET_ROUNDING_MODE_H 1
21
22 #include <fenv.h>
23 #include <fenv_libc.h>
24
25 /* Return the floating-point rounding mode. */
26
27 static inline int
get_rounding_mode(void)28 get_rounding_mode (void)
29 {
30 unsigned long fpcr;
31 __asm__ __volatile__("excb; mf_fpcr %0" : "=f"(fpcr));
32 return (fpcr >> FPCR_ROUND_SHIFT) & 3;
33 }
34
35 #endif /* get-rounding-mode.h */
36