mirror of
https://github.com/espressif/esp-idf.git
synced 2025-10-31 13:09:38 +00:00
66fb5a29bb
Apply the pre-commit hook whitespace fixes to all files in the repo. (Line endings, blank lines at end of file, trailing whitespace)
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/******************************************************************************
|
|
*
|
|
* Copyright (C) 2014 Google, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at:
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
******************************************************************************/
|
|
|
|
#include <string.h>
|
|
|
|
#include "osi/hash_functions.h"
|
|
|
|
hash_index_t hash_function_naive(const void *key)
|
|
{
|
|
return (hash_index_t)key;
|
|
}
|
|
|
|
hash_index_t hash_function_integer(const void *key)
|
|
{
|
|
return ((hash_index_t)key) * 2654435761;
|
|
}
|
|
|
|
hash_index_t hash_function_pointer(const void *key)
|
|
{
|
|
return ((hash_index_t)key) * 2654435761;
|
|
}
|
|
|
|
hash_index_t hash_function_string(const void *key)
|
|
{
|
|
hash_index_t hash = 5381;
|
|
const char *name = (const char *)key;
|
|
size_t string_len = strlen(name);
|
|
for (size_t i = 0; i < string_len; ++i) {
|
|
hash = ((hash << 5) + hash ) + name[i];
|
|
}
|
|
return hash;
|
|
}
|
|
|
|
void hash_function_blob(const unsigned char *s, unsigned int len, hash_key_t h)
|
|
{
|
|
size_t j;
|
|
|
|
while (len--) {
|
|
j = sizeof(hash_key_t)-1;
|
|
|
|
while (j) {
|
|
h[j] = ((h[j] << 7) | (h[j-1] >> 1)) + h[j];
|
|
--j;
|
|
}
|
|
|
|
h[0] = (h[0] << 7) + h[0] + *s++;
|
|
}
|
|
}
|