Short: Fast CRC tools & sources (PPC,WarpOS) Author: unknown Uploader: MagicSN Birdland es bawue de (Porter) Type: dev/c Architecture: ppc-warpup CRC2, CRCFast and CRCTab ports for PPC, including sources. Author unknown. The difference 68k -> PPC gets significant on large files, e.g. greater 1 MB, according to Andreas Kleinert (Porter of the ppc.library Version, not included to this archive) Small Update. -- Steffen Haeuser ************************************************************************************* Cyclic Redundancy Check --------------------------------------------------------- This archive includes the following three files: crc2.c Computes crc by bit shifting crcfast.c Computes crc by table lookup crctab.c Computes tables used in crcfast.c crc.doc This file The utilities crc2 and crcfast compute the cyclic redundancy checks for both the crc-16 (used in arc files) and crc-ccitt (used in xmodem). crcfast is faster than crc2. These routines compute the crc's for a given file as a means of checking data integrity. These routines compile without change under Turbo C. All are short and illustrate the basic principles of crc calculations. CRC References: C Programmer's Guide to Serial Communications, J. Compbell, Howard W. Sams & Co.,(1987) The Great CRC Mystery, T. Ritter, Dr. Dobb's Journal, (February 1986) Byte-Wise CRC Calculations, A. Perez, Wismer, & Becker, IEEE Micro, (June 1983) *************************************************************************************