BSD 4_1c_2 release

[unix-history] / usr / include / struct.h

/*
* 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)))