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a784e502 | 1 | /* Copyright (C) 1997-2001, 2012 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
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5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
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8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
63551311 | 13 | |
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14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
63551311 | 18 | |
5107cf1d | 19 | #ifndef _FENV_H |
f4017d20 | 20 | # error "Never use <bits/fenv.h> directly; include <fenv.h> instead." |
5107cf1d | 21 | #endif |
63551311 | 22 | |
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23 | |
24 | /* Here should be the exception be defined: | |
25 | FE_INVALID | |
26 | FE_DIVBYZERO | |
27 | FE_OVERFLOW | |
28 | FE_UNDERFLOW | |
29 | FE_INEXACT | |
30 | We define no macro which signals no exception is supported. */ | |
31 | ||
32 | #define FE_ALL_EXCEPT 0 | |
33 | ||
34 | ||
35 | /* Here should the rounding modes be defined: | |
36 | FE_TONEAREST | |
37 | FE_DOWNWARD | |
38 | FE_UPWARD | |
d111572f | 39 | FE_TOWARDZERO |
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40 | We define no macro which signals no rounding mode is selectable. */ |
41 | ||
42 | ||
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43 | /* Type representing exception flags. */ |
44 | typedef unsigned int fexcept_t; | |
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45 | |
46 | ||
47 | /* Type representing floating-point environment. */ | |
48 | typedef struct | |
49 | { | |
33d1a2c5 | 50 | fexcept_t __excepts; |
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51 | /* XXX I don't know what else we should save. */ |
52 | } | |
53 | fenv_t; | |
54 | ||
55 | /* If the default argument is used we use this value. */ | |
a784e502 | 56 | #define FE_DFL_ENV ((const fenv_t *) -1l) |