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struct.h
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1995-01-23
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296b
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10 lines
/* struct.h 4.1 83/05/03 */
/*
* access to information relating to the fields of a structure
*/
#define fldoff(str, fld) ((int)&(((struct str *)0)->fld))
#define fldsiz(str, fld) (sizeof(((struct str *)0)->fld))
#define strbase(str, ptr, fld) ((struct str *)((char *)(ptr)-fldoff(str, fld)))