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#ifndef _STDDEF_H
#define _STDDEF_H
/* Signed type of difference of two pointers. */
typedef long ptrdiff_t;
/* Unsigned type of `sizeof' something. */
#ifndef _SIZE_T /* in case <sys/types.h> has defined it. */
#define _SIZE_T
typedef unsigned long size_t;
#endif /* _SIZE_T */
/* A null pointer constant. */
#undef NULL /* in case <stdio.h> has defined it. */
#define NULL 0
/* Offset of member MEMBER in a struct of type TYPE. */
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
#endif /* _STDDEF_H */
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