debian man page for sethtitem

SETHTITEM(3)						MBK HASH TABLE MANAGEMENT FUNCTIONS					      SETHTITEM(3)

NAME
       sethtitem - test and set an item in an hash table.

ORIGIN
       This  software  belongs	to  the  ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Universite Pierre et Marie CURIE, in
       Paris, France.

       Web : http://asim.lip6.fr/recherche/alliance/
       E-mail : alliance-users@asim.lip6.fr

SYNOPSYS
       #include "mut.h"
       int sethtitem(table, key)
       ht *table;
       void *key;

PARAMETERS
       table		   Hash table pointer

       key		   Key used by the hash coding function to set an item

DESCRIPTION
       sethtitem() adds an item in the hash table pointed to by table, whether it existed or not, and returns an appropriate value.  This is  kind
       of a test and set operator.

RETURN VALUE
       If the key exists, the funtion return 1, if it doesn't, the item is stored and the function returns 0.

EXAMPLE
       #include <stdio.h>
       #include "mut.h"
       checksigname(p)
       lofig_list *p;
       {
       int i;
       losig_list *ptsig;
       locon_list *ptcon;
       ht *h;
       char *amatla;
	  for (i = 0, ptsig = p->LOSIG; ptsig; i++, ptsig = ptsig->NEXT);
	  h = addht(i << 1); /* half empty hash tables are faster! */
	  for (ptcon = p->LOCON; ptcon; ptcon = ptcon->NEXT)
	     addhtitem(h, ptcon->NAME, 0);
	  for (ptsig = p->LOSIG; ptsig; ptsig = ptsig->NEXT) {
	     if (ptsig->TYPE == INTERNAL) {
		amatla = getsigname(ptsig);
		if (!sethtitem(h, amatla, 0))
		   printf("node %s is now unique
", amatla);
	     }
	  }
	  delht(h);
       }

ERRORS
       "*** mbk error *** sethtitem impossible : value is EMPTYHT or DELETEHT"
	      The values EMPTYHT, -1,  and DELETEHT, -2, are reserved for internal use, sorry.

DIAGNOSTICS
       The value must be distinct from -1 and -2.

SEE ALSO
       mbk(1), addht(3), delht(3), addhtitem(3), gethtitem(3), delhtitem(3), viewht(3).

BUG REPORT
       This tool is under development at the ASIM department of the LIP6 laboratory.
       We need your feedback to improve documentation and tools.

ASIM
/LIP6							  October 1, 1997						      SETHTITEM(3)