1/* Floating point environment.  ARC version.
 2   Copyright (C) 2020-2025 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 _FENV_H
20# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
21#endif
22
23enum
24  {
25    FE_INVALID   =
26# define FE_INVALID	(0x01)
27      FE_INVALID,
28    FE_DIVBYZERO =
29# define FE_DIVBYZERO	(0x02)
30      FE_DIVBYZERO,
31    FE_OVERFLOW  =
32# define FE_OVERFLOW	(0x04)
33      FE_OVERFLOW,
34    FE_UNDERFLOW =
35# define FE_UNDERFLOW	(0x08)
36      FE_UNDERFLOW,
37    FE_INEXACT   =
38# define FE_INEXACT	(0x10)
39      FE_INEXACT
40  };
41
42# define FE_ALL_EXCEPT \
43	(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT)
44
45enum
46  {
47    FE_TOWARDZERO =
48# define FE_TOWARDZERO	(0x0)
49      FE_TOWARDZERO,
50    FE_TONEAREST  =
51# define FE_TONEAREST	(0x1)	/* default */
52      FE_TONEAREST,
53    FE_UPWARD     =
54# define FE_UPWARD	(0x2)
55      FE_UPWARD,
56    FE_DOWNWARD   =
57# define FE_DOWNWARD	(0x3)
58      FE_DOWNWARD
59  };
60
61typedef unsigned int fexcept_t;
62
63typedef struct
64{
65  unsigned int __fpcr;
66  unsigned int __fpsr;
67} fenv_t;
68
69/* If the default argument is used we use this value.  */
70#define FE_DFL_ENV	((const fenv_t *) -1)
71
72#if __GLIBC_USE (IEC_60559_BFP_EXT_C23)
73/* Type representing floating-point control modes.  */
74typedef unsigned int femode_t;
75
76/* Default floating-point control modes.  */
77# define FE_DFL_MODE	((const femode_t *) -1L)
78#endif