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/* SPDX-License-Identifier: Apache-2.0 */
/* Copyright 2021 IBM Corp. */
#include "crc32.h"
#include <limits.h>
/* Very dumb CRC-32 implementation */
uint32_t crc32(const void *buf, size_t len)
{
const uint8_t *buf8 = buf;
uint32_t rem = 0xffffffff;
for (; len; len--) {
int i;
rem = rem ^ *buf8;
for (i = 0; i < CHAR_BIT; i++)
rem = (rem >> 1) ^ ((rem & 1) * 0xEDB88320);
buf8++;
}
return rem ^ 0xffffffff;
}
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