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 Université 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\n", amatla);
		}
	}
	delht(h);
}

ERRORS¶

"∗∗∗ mbk error ∗∗∗ sethtitem impossible : value is EMPTYHT or DELETEHT"

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.