stddef.h

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//
// stddef.h
//
//      Copyright (c) Microsoft Corporation. All rights reserved.
//
// The C <stddef.h> Standard Library header.
//
#pragma once
#define _INC_STDDEF

#include <corecrt.h>

_CRT_BEGIN_C_HEADER



#ifdef __cplusplus
    namespace std
    {
        typedef decltype(__nullptr) nullptr_t;
    }

    using ::std::nullptr_t;
#endif



#if _CRT_FUNCTIONS_REQUIRED

    _ACRTIMP int* __cdecl _errno(void);
    #define errno (*_errno())

    _ACRTIMP errno_t __cdecl _set_errno(_In_ int _Value);
    _ACRTIMP errno_t __cdecl _get_errno(_Out_ int* _Value);

#endif // _CRT_FUNCTIONS_REQUIRED



#if defined _MSC_VER && !defined _CRT_USE_BUILTIN_OFFSETOF
    #ifdef __cplusplus
        #define offsetof(s,m) ((size_t)&reinterpret_cast<char const volatile&>((((s*)0)->m)))
    #else
        #define offsetof(s,m) ((size_t)&(((s*)0)->m))
    #endif
#else
    #define offsetof(s,m) __builtin_offsetof(s,m)
#endif

_ACRTIMP extern unsigned long  __cdecl __threadid(void);
#define _threadid (__threadid())
_ACRTIMP extern uintptr_t __cdecl __threadhandle(void);



_CRT_END_C_HEADER