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karinha wrote:

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// C:\FWH\SAMPLES\CRC.PRG

#include "fivewin.ch"
// #include "HbCompat.ch"

MEMVAR aCrc, poly, initvalue, finavalue

FUNCTION Main()

   LOCAL crcResu, CCRCRESU, cResult

   PRIVATE aCrc := { 0x00, 0x01, 0x07 }
   PRIVATE poly := 0x8005
   PRIVATE initvalue := 0xFFFF
   PRIVATE finavalue := 0x0000

   Ccrcresu := Calculate_Crc()

   // asi, funciona:

   ? HB_NumToHex( Ccrcresu )

   ? HB_NumToHex( hb_Random( 0xFFFFFF ) ) + '"'

   // no funciona:
   // cResult := hb_NumToHex( crcresu, 4 ) // return error.

   // ? cResult

   // xHarbour:
   // cResult := NumToHex( crcresu, 4 )

RETURN NIL

FUNCTION Calculate_Crc()

   LOCAL crc := initvalue, i, j

   FOR I = 1 TO Len( aCrc )

      crc = hb_bitXor( crc, hb_bitShift( aCrc[ i ], 8 ) )

      FOR j = 1 TO 8

         IF hb_bitAnd( crc, 0x8000 ) <> 0

            crc = hb_bitXor( hb_bitShift( crc, 1 ), poly )

         ELSE

            crc = hb_bitShift( crc, 1 )

         ENDIF

      NEXT

   NEXT

RETURN hb_bitXor( crc, finavalue )

/*
hbmisc.hbc

   DecToHexa()
   HexaToDec()
   IsHexa()

hbnf.hbc (instalado):

   ft_Byt2Hex()
   ft_Hex2Dec()

xhb.hbc

   HexToNum()
   HexToStr()
   NumToHex()
   StrToHex()

Harbour Core ***

   hb_HexToNum()
   hb_HexToStr()
   hb_NumToHex()
   hb_StrToHex()

hbmisc.hbc

   BinToDec()
   DecToBin()
   IsBin()

hbnf.hbc

   ft_Dec2Bin()

Harbour Core ***  Return -> Int <- Param

   Bin2I()
   Bin2L()
   Bin2W()
   I2Bin()
   L2Bin()
*/

// FIN / END
 

Regards, Saludos.

nageswaragunupudi wrote:

so I make these code and solved my problem below:

Congratulations and thanks for sharing your solution.