1 | /*===---- 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 |
31 | typedef __typeof__(((int*)0)-((int*)0)) ptrdiff_t; |
32 | #endif |
33 | #ifndef _SIZE_T |
34 | #define _SIZE_T |
35 | typedef __typeof__(sizeof(int)) size_t; |
36 | #endif |
37 | #ifndef __cplusplus |
38 | #ifndef _WCHAR_T |
39 | #define _WCHAR_T |
40 | typedef __WCHAR_TYPE__ wchar_t; |
41 | #endif |
42 | #endif |
43 | |
44 | #undef NULL |
45 | #ifdef __cplusplus |
46 | #undef __null // VC++ hack. |
47 | #define NULL __null |
48 | #else |
49 | #define NULL ((void*)0) |
50 | #endif |
51 | |
52 | #ifndef offsetof |
53 | #define offsetof(t, d) __builtin_offsetof(t, d) |
54 | #endif |
55 | |
56 | #endif /* __STDDEF_H */ |
57 | |
58 | /* Some C libraries expect to see a wint_t here. Others (notably MinGW) will use |
59 | __WINT_TYPE__ directly; accommodate both by requiring __need_wint_t */ |
60 | #if defined(__need_wint_t) |
61 | #if !defined(_WINT_T) |
62 | #define _WINT_T |
63 | typedef __WINT_TYPE__ wint_t; |
64 | #endif /* _WINT_T */ |
65 | #undef __need_wint_t |
66 | #endif /* __need_wint_t */ |
67 | |