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Ying Wangb335bb02011-11-29 10:23:55 -08001/*===---- stddef.h - Basic type definitions --------------------------------===
2 *
3 * Copyright (c) 2008 Eli Friedman
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to deal
7 * in the Software without restriction, including without limitation the rights
8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 * copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21 * THE SOFTWARE.
22 *
23 *===-----------------------------------------------------------------------===
24 */
25
26#ifndef __STDDEF_H
27#define __STDDEF_H
28
29#ifndef _PTRDIFF_T
30#define _PTRDIFF_T
Stephen Hinesc6ee7df2013-04-02 18:41:57 -070031typedef __PTRDIFF_TYPE__ ptrdiff_t;
Ying Wangb335bb02011-11-29 10:23:55 -080032#endif
33#ifndef _SIZE_T
34#define _SIZE_T
Stephen Hinesc6ee7df2013-04-02 18:41:57 -070035typedef __SIZE_TYPE__ size_t;
Ying Wangb335bb02011-11-29 10:23:55 -080036#endif
37#ifndef __cplusplus
38#ifndef _WCHAR_T
39#define _WCHAR_T
40typedef __WCHAR_TYPE__ wchar_t;
41#endif
42#endif
43
44#undef NULL
45#ifdef __cplusplus
Ying Wang60999142013-01-07 13:59:36 -080046# if !defined(__MINGW32__) && !defined(_MSC_VER)
47# define NULL __null
48# else
49# define NULL 0
50# endif
Ying Wangb335bb02011-11-29 10:23:55 -080051#else
Ying Wang60999142013-01-07 13:59:36 -080052# define NULL ((void*)0)
53#endif
54
55#ifdef __cplusplus
56#if defined(_MSC_EXTENSIONS) && defined(_NATIVE_NULLPTR_SUPPORTED)
57namespace std { typedef decltype(nullptr) nullptr_t; }
58using ::std::nullptr_t;
59#endif
Ying Wangb335bb02011-11-29 10:23:55 -080060#endif
61
62#define offsetof(t, d) __builtin_offsetof(t, d)
63
64#endif /* __STDDEF_H */
65
66/* Some C libraries expect to see a wint_t here. Others (notably MinGW) will use
67__WINT_TYPE__ directly; accommodate both by requiring __need_wint_t */
68#if defined(__need_wint_t)
69#if !defined(_WINT_T)
70#define _WINT_T
71typedef __WINT_TYPE__ wint_t;
72#endif /* _WINT_T */
73#undef __need_wint_t
74#endif /* __need_wint_t */