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/********************************************************/
/* ntapi: Native API core library */
/* Copyright (C) 2013--2017 Z. Gilboa */
/* Released under GPLv2 and GPLv3; see COPYING.NTAPI. */
/********************************************************/
#include <psxtypes/psxtypes.h>
#include <ntapi/nt_crc64.h>
#include "ntapi_impl.h"
static const uint64_t crc64_table[256] = NTAPI_CRC64_TABLE;
uint64_t __ntapi_tt_buffer_crc64(
uint64_t prev_hash,
const void * buffer,
size_t size)
{
const unsigned char * ch;
uint64_t crc64;
crc64 = prev_hash ^ 0xFFFFFFFFFFFFFFFF;
ch = buffer;
for (; size; size--,ch++)
crc64 = (crc64 >> 8) ^ crc64_table[(crc64 ^ *ch) & 0xFF];
return (crc64 ^ 0xFFFFFFFFFFFFFFFF);
}
uint64_t __cdecl __ntapi_tt_mbstr_crc64(const void * str)
{
const unsigned char * ch;
uint64_t crc64;
crc64 = 0 ^ 0xFFFFFFFFFFFFFFFF;
ch = str;
while (*ch) {
crc64 = (crc64 >> 8) ^ crc64_table[(crc64 ^ *ch) & 0xFF];
ch++;
}
return (crc64 ^ 0xFFFFFFFFFFFFFFFF);
}
const uint64_t * __cdecl __ntapi_tt_crc64_table(void)
{
return crc64_table;
}
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