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#ifndef STDDEF_H
#define STDDEF_H
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
/** EFI headers also define NULL */
#undef NULL
/** Null pointer */
#define NULL ( ( void * ) 0 )
/**
* Get offset of a field within a structure
*
* @v type Structure type
* @v field Field within structure
* @ret offset Offset within structure
*/
#if defined ( __GNUC__ ) && ( __GNUC__ > 3 )
#define offsetof( type, field ) __builtin_offsetof ( type, field )
#else
#define offsetof( type, field ) ( ( size_t ) &( ( ( type * ) NULL )->field ) )
#endif
/**
* Get containing structure
*
* @v ptr Pointer to contained field
* @v type Containing structure type
* @v field Field within containing structure
* @ret container Pointer to containing structure
*/
#define container_of( ptr, type, field ) ( { \
type *__container; \
const volatile typeof ( __container->field ) *__field = (ptr); \
__container = ( ( ( void * ) __field ) - \
offsetof ( type, field ) ); \
__container; } )
/* __WCHAR_TYPE__ is defined by gcc and will change if -fshort-wchar is used */
#ifndef __WCHAR_TYPE__
#define __WCHAR_TYPE__ uint16_t
#endif
#ifndef __WINT_TYPE__
#define __WINT_TYPE__ int
#endif
typedef __WCHAR_TYPE__ wchar_t;
typedef __WINT_TYPE__ wint_t;
#endif /* STDDEF_H */
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