mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-28 12:25:19 +01:00
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/*
|
|
* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include <stddef.h>
|
|
#include "internal/cryptlib.h"
|
|
|
|
const void *ossl_bsearch(const void *key, const void *base, int num,
|
|
int size, int (*cmp) (const void *, const void *),
|
|
int flags)
|
|
{
|
|
const char *base_ = base;
|
|
int l, h, i = 0, c = 0;
|
|
const char *p = NULL;
|
|
|
|
if (num == 0)
|
|
return NULL;
|
|
l = 0;
|
|
h = num;
|
|
while (l < h) {
|
|
i = (l + h) / 2;
|
|
p = &(base_[i * size]);
|
|
c = (*cmp) (key, p);
|
|
if (c < 0)
|
|
h = i;
|
|
else if (c > 0)
|
|
l = i + 1;
|
|
else
|
|
break;
|
|
}
|
|
if (c != 0 && !(flags & OSSL_BSEARCH_VALUE_ON_NOMATCH))
|
|
p = NULL;
|
|
else if (c == 0 && (flags & OSSL_BSEARCH_FIRST_VALUE_ON_MATCH)) {
|
|
while (i > 0 && (*cmp) (key, &(base_[(i - 1) * size])) == 0)
|
|
i--;
|
|
p = &(base_[i * size]);
|
|
}
|
|
return p;
|
|
}
|