crc32.c File Reference

#include <rtl.h>
#include <debug.h>

Include dependency graph for crc32.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
ULONG NTAPI	RtlComputeCrc32 (IN ULONG Initial, IN PUCHAR Data, IN ULONG Length)

Variables
static const ULONG	CrcTable [256]

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 20 of file crc32.c.

Function Documentation

RtlComputeCrc32()

ULONG NTAPI RtlComputeCrc32	(	IN ULONG	Initial,
		IN PUCHAR	Data,
		IN ULONG	Length
	)

Definition at line 89 of file crc32.c.

{
  ULONG CrcValue = ~Initial;
 
  DPRINT("(%u,%p,%u)\n", Initial, Data, Length);
 
  while (Length > 0)
  {
    CrcValue = CrcTable[(CrcValue ^ *Data) & 0xff] ^ (CrcValue >> 8);
    Data++;
    Length--;
  }
  return ~CrcValue;
}

Variable Documentation

CrcTable

const ULONG CrcTable[256]

static

Definition at line 26 of file crc32.c.

Referenced by RtlComputeCrc32().