1 /* Floating point environment, RISC-V version.
2    Copyright (C) 1998-2021 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 
23 enum
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 
45 enum
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 
62 typedef unsigned int fexcept_t;
63 typedef 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_C2X)
69 /* Type representing floating-point control modes.  */
70 typedef unsigned int femode_t;
71 
72 /* Default floating-point control modes.  */
73 # define FE_DFL_MODE	((const femode_t *) -1L)
74 #endif
75