| isfd | isam file descriptor |
| dict | pointer to dictinfo structure |
ISTRUE, or ISFALSE, in which case the error code is returned by isErrno, or found in isfd->iserrno
this call will return information about the specified file in the structure passed. the values available are:
short di_nkeys; /* number of indexes */ shord di_curidx; /* current index number */ short di_recsize; /* data record length */ short di_idxsize; /* index record block size */ long di_nrecords; /* current record count */