projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 39236c6e A |
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 | ||
| cb323159 A |
29 | #undef NULL |
| 30 | #ifdef __cplusplus | |
| 31 | #if __cplusplus >= 201103L | |
| 32 | #define NULL nullptr | |
| 33 | #else | |
| 34 | #undef __null // VC++ hack. | |
| 35 | #define NULL __null | |
| 36 | #endif | |
| 37 | #else | |
| 38 | #define NULL ((void*)0) | |
| 39 | #endif | |
| 40 | ||
| 39236c6e A |
41 | #ifndef _PTRDIFF_T |
| 42 | #define _PTRDIFF_T | |
| cb323159 | 43 | typedef __typeof__(((int*)NULL)-((int*)NULL)) ptrdiff_t; |
| 39236c6e A |
44 | #endif |
| 45 | #ifndef _SIZE_T | |
| 46 | #define _SIZE_T | |
| 47 | typedef __typeof__(sizeof(int)) size_t; | |
| 48 | #endif | |
| 49 | #ifndef __cplusplus | |
| 50 | #ifndef _WCHAR_T | |
| 51 | #define _WCHAR_T | |
| 52 | typedef __WCHAR_TYPE__ wchar_t; | |
| 53 | #endif | |
| 54 | #endif | |
| 55 | ||
| 813fb2f6 | 56 | #ifndef offsetof |
| 39236c6e | 57 | #define offsetof(t, d) __builtin_offsetof(t, d) |
| 813fb2f6 | 58 | #endif |
| 39236c6e A |
59 | |
| 60 | #endif /* __STDDEF_H */ | |
| 61 | ||
| 62 | /* Some C libraries expect to see a wint_t here. Others (notably MinGW) will use | |
| 63 | __WINT_TYPE__ directly; accommodate both by requiring __need_wint_t */ | |
| 64 | #if defined(__need_wint_t) | |
| 65 | #if !defined(_WINT_T) | |
| 66 | #define _WINT_T | |
| 67 | typedef __WINT_TYPE__ wint_t; | |
| 68 | #endif /* _WINT_T */ | |
| 69 | #undef __need_wint_t | |
| 70 | #endif /* __need_wint_t */ |