1/* Floating point environment, RISC-V version.
2 Copyright (C) 1998-2026 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