glibc/nss/simple-nss-hash.h

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/* __simple_nss_hash for testing nss_hash function
Copyright (C) 2022-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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, see
<https://www.gnu.org/licenses/>. */
#ifndef _SIMPLE_NSS_HASH_H
#define _SIMPLE_NSS_HASH_H 1
#include <stdint.h>
/* For testing/benchmarking purposes. Real implementation in
nss/nss_hash.c. */
static uint32_t
__attribute__ ((unused))
__simple_nss_hash (const void *keyarg, size_t len)
{
const unsigned char *key;
size_t i;
uint32_t h = 0;
key = keyarg;
for (i = 0; i < len; ++i)
h = *key++ + 65599 * h;
return h;
}
#endif /* simple-nss-hash.h */