将缓冲区的数字字符串转化成BCD码数据_INT PubNumericToBCDStr(_UCHR *pcNStr, _INT iNLen, _UCHR *pcBCDStr)

INT PubNumericToBCDStr(_CHR *pcNStr, _INT iNLen, _CHR *pcBCDStr)
{
    _UCHR *pN = pcNStr;
    _UCHR *pB = pcBCDStr;
    _UCHR caBuffer[2];
    _UCHR cHigh, cLow;
    _UINT iCount = 0;
    _UINT iNCount = iNLen / 2 + iNLen % 2;

    if((pcNStr == NULL) || (pcBCDStr == NULL))
    {
        sprintf(g_caMsg,"[%s:%d] PubNumericToBCDStr input parameter error!",__FILE__, __LINE__);
        ErrLog(1000, g_caMsg, RPT_TO_LOG, 0, 0);
        return OPER_FAIL;
    }

    for( iCount = 0; iCount < iNCount; iCount++)
    {
            if ( (iCount == 0) && (iNLen%2 != 0) )
            {
	      memset(caBuffer, '', sizeof(caBuffer));
	      memcpy(caBuffer + 1, pN, 1);
	      cHigh = (_UCHR) ((*(caBuffer + 0) - 0x30) << 4);
	      cLow = (_UCHR) (*(caBuffer + 1) - 0x30);
	      *pB = (_UCHR) ( cHigh + cLow );
	      pB += 1;
	      pN += 1;
            }
            else
            {
	      cHigh = (_UCHR) ((*(pN + 0) - 0x30) << 4);
	      cLow = (_UCHR) (*(pN + 1) - 0x30);
	      *pB = (_UCHR) ( cHigh + cLow );
	      pB += 1;
	      pN += 2;
            }
    }
return OPER_SUCC;
}

  

原文地址:https://www.cnblogs.com/sherlockhomles/p/3616010.html