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/*
* comparisons
*
* Copyright (C) 2000 Henry Spencer.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Library General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <https://www.gnu.org/licenses/lgpl-2.1.txt>.
*
* This 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 Library General Public
* License for more details.
*/
#include <string.h> /* for memcmp() */
#include "ip_address.h"
#include "ip_said.h"
#include "ip_subnet.h"
#include "ip_info.h"
#include "passert.h"
/*
* addrcmp - compare two addresses
* Caution, the order of the tests is subtle: doing type test before
* size test can yield cases where a<b, b<c, but a>c.
*
* computes "l-r"
*/
int /* like memcmp */
addrcmp(const ip_address *l, const ip_address *r)
{
if (address_is_unset(l) && address_is_unset(r)) {
/* unset addresses equal */
return 0;
}
if (address_is_unset(l)) {
return -1;
}
if (address_is_unset(r)) {
return 1;
}
return ip_bytes_cmp(l->version, l->bytes,
r->version, r->bytes);
}
/*
* sameaddr - are two addresses the same?
*/
bool sameaddr(const ip_address *a, const ip_address *b)
{
return addrcmp(a, b) == 0;
}
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