| Ying Wang | b335bb0 | 2011-11-29 10:23:55 -0800 | [diff] [blame^] | 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 | typedef __typeof__(((int*)0)-((int*)0)) ptrdiff_t; |
| 30 | #ifndef _SIZE_T |
| 31 | #define _SIZE_T |
| 32 | typedef __typeof__(sizeof(int)) size_t; |
| 33 | #endif |
| 34 | #ifndef __cplusplus |
| 35 | #ifndef _WCHAR_T |
| 36 | #define _WCHAR_T |
| 37 | typedef __WCHAR_TYPE__ wchar_t; |
| 38 | #endif |
| 39 | #endif |
| 40 | |
| 41 | #undef NULL |
| 42 | #ifdef __cplusplus |
| 43 | #undef __null // VC++ hack. |
| 44 | #define NULL __null |
| 45 | #else |
| 46 | #define NULL ((void*)0) |
| 47 | #endif |
| 48 | |
| 49 | #define offsetof(t, d) __builtin_offsetof(t, d) |
| 50 | |
| 51 | #endif /* __STDDEF_H */ |
| 52 | |
| 53 | /* Some C libraries expect to see a wint_t here. Others (notably MinGW) will use |
| 54 | __WINT_TYPE__ directly; accomodate both by requiring __need_wint_t */ |
| 55 | #if defined(__need_wint_t) |
| 56 | #if !defined(_WINT_T) |
| 57 | #define _WINT_T |
| 58 | typedef __WINT_TYPE__ wint_t; |
| 59 | #endif /* _WINT_T */ |
| 60 | #undef __need_wint_t |
| 61 | #endif /* __need_wint_t */ |