1/* Floating point environment, RISC-V version.
 2   Copyright (C) 1998-2025 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_INEXACT   =
26#define FE_INEXACT	(0x01)
27      FE_INEXACT,
28    FE_UNDERFLOW =
29#define FE_UNDERFLOW	(0x02)
30      FE_UNDERFLOW,
31    FE_OVERFLOW  =
32#define FE_OVERFLOW	(0x04)
33      FE_OVERFLOW,
34    FE_DIVBYZERO =
35#define FE_DIVBYZERO	(0x08)
36      FE_DIVBYZERO,
37    FE_INVALID   =
38#define FE_INVALID	(0x10)
39      FE_INVALID
40  };
41
42#define FE_ALL_EXCEPT \
43	(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
44
45enum
46  {
47    FE_TONEAREST  =
48#define FE_TONEAREST	(0x0)
49      FE_TONEAREST,
50    FE_TOWARDZERO =
51#define FE_TOWARDZERO	(0x1)
52      FE_TOWARDZERO,
53    FE_DOWNWARD   =
54#define FE_DOWNWARD	(0x2)
55      FE_DOWNWARD,
56    FE_UPWARD     =
57#define FE_UPWARD	(0x3)
58      FE_UPWARD
59  };
60
61
62typedef unsigned int fexcept_t;
63typedef unsigned int fenv_t;
64
65/* If the default argument is used we use this value.  */
66#define FE_DFL_ENV	((__const fenv_t *) -1)
67
68#if __GLIBC_USE (IEC_60559_BFP_EXT_C23)
69/* Type representing floating-point control modes.  */
70typedef unsigned int femode_t;
71
72/* Default floating-point control modes.  */
73# define FE_DFL_MODE	((const femode_t *) -1L)
74#endif