integer function which searches the memory directory for an entry

which has a name matching the name furnished to SEARCH. The value of

SEARCH upon return is a pointer to the correct MEMDIR entry. A failure

returns the value zero.

B.6.18 SIMDIS

 This is a utility subroutine whose primary function is diagnostic.

It writes out the entire SIM. It is used exclusively when problems are

encountered in accessing data in SIM COMMON. The SIM can then be

examined by the user to determine the source of the problem.

B.6.19 SIMDLT

 This subroutine deletes the element indicated by the input data

from the SIM in the SIM COMMON area. The appropriate H- and V-cell are

adjusted to eliminate the pointers to the deleted element. The E-cell

for the element remains unchanged.

B.6.20 SPEDUP

 This subroutine, written by Cunningham (1973), performs the

precedence ordering algorithm of Sargent and Westerberg (1964) on an

incidence matrix stored as an SIM. The SIM must be output set assigned.

B.6.21 WRTDIR

 This entry to the subroutine WRTDSK (6.22) writes the memory

directory onto the first direct access record and terminates execution

with a STOP 100 statement. Should any routines using the memory system

encounter problems from which they cannot recover, a call to WRTDIR

provides a means of saving the contents of the memory system for

possible use in correcting the problem.