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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*/
#include "platform_defs.h"
#include "util.h"
/*
* libfrog is a collection of miscellaneous userspace utilities.
* It's a library of Funny Random Oddball Gunk <cough>.
*/
unsigned int
log2_roundup(unsigned int i)
{
unsigned int rval;
for (rval = 0; rval < NBBY * sizeof(i); rval++) {
if ((1 << rval) >= i)
break;
}
return rval;
}
void *
memchr_inv(const void *start, int c, size_t bytes)
{
const unsigned char *p = start;
while (bytes > 0) {
if (*p != (unsigned char)c)
return (void *)p;
bytes--;
}
return NULL;
}
unsigned int
log2_rounddown(unsigned long long i)
{
int rval;
for (rval = NBBY * sizeof(i) - 1; rval >= 0; rval--) {
if ((1ULL << rval) < i)
break;
}
return rval;
}
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