/* 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)))