mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-10 23:32:09 +00:00
76ac446156
And rename _bsearch to QF_bsearch_r since that's far less confusing. Also, update the test to make it possible for valgrind to detect the out-by-one. The problem was found when trying to remove components from an entity when using subpools.
123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
/*
|
|
test-bsearch.c
|
|
|
|
Fuzzy and reentrant bsearch
|
|
|
|
Copyright (C) 2021 Bill Currie <bill@taniwha.org>
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "QF/fbsearch.h"
|
|
#include "bsearch.h"
|
|
|
|
// will be prefix-summed
|
|
int srcdata[] = {
|
|
2, 1, 3, 1, 2, 2, 5, 4,
|
|
2, 1, 3, 1, 2, 2, 5, 4,
|
|
};
|
|
#define nele ((int) (sizeof (srcdata) / sizeof (srcdata[0])))
|
|
int *data;
|
|
|
|
static int
|
|
compare (const void *a, const void *b)
|
|
{
|
|
return *(const int *)a - *(const int *)b;
|
|
}
|
|
|
|
static int
|
|
compared (const void *a, const void *b, void *d)
|
|
{
|
|
return *(const int *)a - *(const int *)b;
|
|
}
|
|
|
|
static int
|
|
fuzzy_check (const int *p, int val, const char *func)
|
|
{
|
|
if (val < data[0] && p) {
|
|
printf ("%s found %d, but should not\n", func, val);
|
|
return 0;
|
|
}
|
|
if (p) {
|
|
int ok = p < data + nele - 1;
|
|
if (p >= data + nele) {
|
|
printf ("%s went out of bounts: %zd\n", func, p - data);
|
|
return 0;
|
|
}
|
|
if (val < *p || (ok && val >= p[1])) {
|
|
printf ("%s found %d:%d for %d\n", func, *p, ok ? p[1] : -1, val);
|
|
return 0;
|
|
}
|
|
}
|
|
if (!p && val >= data[0]) {
|
|
printf ("%s did not find %d, but should have\n", func, val);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
main(int argc, const char **argv)
|
|
{
|
|
int ret = 0;
|
|
int *p;
|
|
|
|
data = malloc (nele * sizeof (int));
|
|
memcpy (data, srcdata, nele * sizeof (int));
|
|
|
|
for (int i = 1; i < nele; i++) {
|
|
data[i] += data[i - 1];
|
|
}
|
|
for (int i = 0; i < nele; i++) {
|
|
printf ("%2d %d\n", i, data[i]);
|
|
}
|
|
for (int i = 0; i < data[nele - 1] + 2; i++) {
|
|
p = fbsearch (&i, data, nele, sizeof (int), compare);
|
|
if (!fuzzy_check (p, i, "fbsearch")) {
|
|
ret |= 1;
|
|
}
|
|
p = fbsearch_r (&i, data, nele, sizeof (int), compared, 0);
|
|
if (!fuzzy_check (p, i, "fbsearch_r")) {
|
|
ret |= 1;
|
|
}
|
|
if (p && i == *p) {
|
|
p = QF_bsearch_r (&i, data, nele, sizeof (int), compared, 0);
|
|
if (!p || *p != i) {
|
|
printf ("QF_bsearch_r did not find %d, but should have\n", i);
|
|
ret |= 1;
|
|
}
|
|
} else {
|
|
p = QF_bsearch_r (&i, data, nele, sizeof (int), compared, 0);
|
|
if (p) {
|
|
printf ("QF_bsearch_r found %d, but should not have\n", i);
|
|
ret |= 1;
|
|
}
|
|
}
|
|
}
|
|
free (data);
|
|
return ret;
|
|
}
|