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/* Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2000.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stdio.h>
#include <stdlib.h>
struct entry
{
int val;
const char *str;
} arr[] =
{
{ 0, "zero" },
{ 1, "one" },
{ 2, "two" },
{ 3, "three" },
{ 4, "four" },
{ 5, "five" },
{ 6, "six" },
{ 7, "seven" },
{ 8, "eight" },
{ 9, "nine" },
{ 10, "ten" }
};
#define narr (sizeof (arr) / sizeof (arr[0]))
static int
comp (const void *p1, const void *p2)
{
struct entry *e1 = (struct entry *) p1;
struct entry *e2 = (struct entry *) p2;
return e1->val - e2->val;
}
int
main (void)
{
int cnt;
int result = 0;
struct entry key;
struct entry *res;
for (cnt = 0; cnt < narr; ++cnt)
{
key.val = arr[cnt].val;
res = (struct entry *) bsearch (&key, arr, narr, sizeof (arr[0]), comp);
if (res == NULL)
{
printf ("entry %d not found\n", cnt);
result = 1;
}
else if (res != &arr[cnt])
{
puts ("wrong entry returned");
result = 1;
}
}
/* And some special tests that shouldn't find any entry. */
key.val = -1;
res = (struct entry *) bsearch (&key, arr, narr, sizeof (arr[0]), comp);
if (res != NULL)
{
puts ("found an entry that's not there");
result = 1;
}
key.val = 11;
res = (struct entry *) bsearch (&key, arr, narr, sizeof (arr[0]), comp);
if (res != NULL)
{
puts ("found an entry that's not there");
result = 1;
}
key.val = 11;
res = (struct entry *) bsearch (&key, arr, 0, sizeof (arr[0]), comp);
if (res != NULL)
{
puts ("found an entry that's not there");
result = 1;
}
/* Now the array contains only one element - no entry should be found. */
for (cnt = 0; cnt < narr; ++cnt)
{
key.val = arr[cnt].val;
res = (struct entry *) bsearch (&key, &arr[5], 1, sizeof (arr[0]), comp);
if (cnt == 5)
{
if (res == NULL)
{
printf ("entry %d not found\n", cnt);
result = 1;
}
else if (res != &arr[cnt])
{
puts ("wrong entry returned");
result = 1;
}
}
else if (res != NULL)
{
puts ("found an entry that's not there");
result = 1;
}
}
if (result == 0)
puts ("all OK");
return result;
}
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