예제 #1
0
void *del234(tree234 * t, void *e)
{
    int index;
    if (!findrelpos234(t, e, NULL, REL234_EQ, &index))
	return NULL;		       /* it wasn't in there anyway */
    return delpos234_internal(t, index);	/* it's there; delete it. */
}
예제 #2
0
void *findpos234(tree234 *t, void *e, cmpfn234 cmp, int *index) {
    return findrelpos234(t, e, cmp, REL234_EQ, index);
}
예제 #3
0
void *findrel234(tree234 *t, void *e, cmpfn234 cmp, int relation) {
    return findrelpos234(t, e, cmp, relation, NULL);
}
예제 #4
0
void *find234(tree234 *t, void *e, cmpfn234 cmp) {
    return findrelpos234(t, e, cmp, REL234_EQ, NULL);
}
예제 #5
0
int findtest(void) {
    const static int rels[] = {
	REL234_EQ, REL234_GE, REL234_LE, REL234_LT, REL234_GT
    };
    const static char *const relnames[] = {
	"EQ", "GE", "LE", "LT", "GT"
    };
    int i, j, rel, index;
    char *p, *ret, *realret, *realret2;
    int lo, hi, mid, c;

    for (i = 0; i < NSTR; i++) {
	p = strings[i];
	for (j = 0; j < sizeof(rels)/sizeof(*rels); j++) {
	    rel = rels[j];

	    lo = 0; hi = arraylen-1;
	    while (lo <= hi) {
		mid = (lo + hi) / 2;
		c = strcmp(p, array[mid]);
		if (c < 0)
		    hi = mid-1;
		else if (c > 0)
		    lo = mid+1;
		else
		    break;
	    }

	    if (c == 0) {
		if (rel == REL234_LT)
		    ret = (mid > 0 ? array[--mid] : NULL);
		else if (rel == REL234_GT)
		    ret = (mid < arraylen-1 ? array[++mid] : NULL);
		else
		    ret = array[mid];
	    } else {
		assert(lo == hi+1);
		if (rel == REL234_LT || rel == REL234_LE) {
		    mid = hi;
		    ret = (hi >= 0 ? array[hi] : NULL);
		} else if (rel == REL234_GT || rel == REL234_GE) {
		    mid = lo;
		    ret = (lo < arraylen ? array[lo] : NULL);
		} else
		    ret = NULL;
	    }

	    realret = findrelpos234(tree, p, NULL, rel, &index);
	    if (realret != ret) {
		error("find(\"%s\",%s) gave %s should be %s",
		      p, relnames[j], realret, ret);
	    }
	    if (realret && index != mid) {
		error("find(\"%s\",%s) gave %d should be %d",
		      p, relnames[j], index, mid);
	    }
	    if (realret && rel == REL234_EQ) {
		realret2 = index234(tree, index);
		if (realret2 != realret) {
		    error("find(\"%s\",%s) gave %s(%d) but %d -> %s",
			  p, relnames[j], realret, index, index, realret2);
		}
	    }
#if 0
	    printf("find(\"%s\",%s) gave %s(%d)\n", p, relnames[j],
		   realret, index);
#endif
	}
    }

    realret = findrelpos234(tree, NULL, NULL, REL234_GT, &index);
    if (arraylen && (realret != array[0] || index != 0)) {
	error("find(NULL,GT) gave %s(%d) should be %s(0)",
	      realret, index, array[0]);
    } else if (!arraylen && (realret != NULL)) {
	error("find(NULL,GT) gave %s(%d) should be NULL",
	      realret, index);
    }

    realret = findrelpos234(tree, NULL, NULL, REL234_LT, &index);
    if (arraylen && (realret != array[arraylen-1] || index != arraylen-1)) {
	error("find(NULL,LT) gave %s(%d) should be %s(0)",
	      realret, index, array[arraylen-1]);
    } else if (!arraylen && (realret != NULL)) {
	error("find(NULL,LT) gave %s(%d) should be NULL",
	      realret, index);
    }
}