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sethtitem
Langue: en
Version: October 1, 1997 (fedora - 05/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
sethtitem - test and set an item in an hash table.man2html: unable to open or read file man1/alc_origin.1
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"- 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).man2html: unable to open or read file man1/alc_bug_report.1
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