ultrix man page for nlist

nlist(3)						     Library Functions Manual							  nlist(3)

Name
       nlist - get entries from name list

Syntax
       #include <nlist.h>

       nlist(filename, nl)
       char *filename;
       struct nlist nl[];

Description
       The  subroutine	examines  the name list in the given executable output file and selectively extracts a list of values.	The name list con-
       sists of an array of structures containing names, types and values.  The list is terminated with a null name.  Each name is  looked  up	in
       the  name  list of the file.  If the name is found, the type and value of the name are inserted in the next two fields.	If the name is not
       found, both entries are set to 0.  See for the structure declaration.

       This subroutine is useful for examining the system name list kept in the file In this way programs can obtain system addresses that are	up
       to date.

Diagnostics
       If the file cannot be found or if it is not a valid namelist -1 is returned; otherwise, the number of unfound namelist entries is returned.

       The type entry is set to 0 if the symbol is not found.

See Also
       a.out(5)

								       RISC								  nlist(3)