xHarbour Reference Documentation > Function Reference

Hb_CRC32()

Calculates the checksum for a stream of data using the CRC 32 algorithm.

Syntax

HB_CRC32( <cString> ) --> nCRC32

Arguments

<cString>

This is a character string to calulate the checksum for.

Return

The function returns the calculated checksum as a numeric value.

Description

HB_CRC32() implements the CRC32 algorithm (Cyclic Redundancy Code) for calculating the checksum of a character string. This algorithm computes faster than the algorithm of the HB_MD5() function, but is less reliable. The following table compares the speed of checksum algorithms available in xHarbour:

Algorithm comparison

Function	Algorithm	Relative Speed
HB_CheckSum()	Adler 32 bit	1.00
HB_CRC32()	CRC 32 bit	1.46
HB_MD5()	MD5 128 bit	4.51

Info

See also:	HB_CheckSum(), HB_MD5()
Category:	Checksum functions , xHarbour extensions
Source:	rtl\hbcrc32.c
LIB:	xhb.lib
DLL:	xhbdll.dll