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| 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 #define offsetof(t, d) __builtin_offsetof(t, d) | |
| 53 | |
| 54 #endif /* __STDDEF_H */ | |
| 55 | |
| 56 /* Some C libraries expect to see a wint_t here. Others (notably MinGW) will use | |
| 57 __WINT_TYPE__ directly; accommodate both by requiring __need_wint_t */ | |
| 58 #if defined(__need_wint_t) | |
| 59 #if !defined(_WINT_T) | |
| 60 #define _WINT_T | |
| 61 typedef __WINT_TYPE__ wint_t; | |
| 62 #endif /* _WINT_T */ | |
| 63 #undef __need_wint_t | |
| 64 #endif /* __need_wint_t */ | |
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