sub find_range
    {
        my $max=$_[0];
        my $min=$_[1];
        my $step=$_[2];
        my @step_part;
        my $range;
        $dec_lolmt=0;

        # for avoiding positive offset in compu method any min data greater than zero is made equal to zero.
        if ($min>0)
        {
            $dec_lolmt=$min;
            $min=0;

            print OUT_LOG "WARNING: minimum physical value found to be positive for $name and is reduced to zero \n";
        }
        my @step_part=split(/\//,$step);
        if($step_part[1]=~ /^[0-9]/)
        {
         $step_real=$step_part[0]/$step_part[1];
         }
         else
         {
         $step_real=$step_part[0];
         }
         # check for proper value of range could be returned or not

         if((!($step_real=~ /^[0-9]/))||($max==$min)||($step_real==0)||(!($step_real =~ /^-?\d/)))
        {
            print OUT_LOG "WARNING: No proper range could be determined for $name  : default range returned as 255  \n";
                $range = 255;
        }

        $range=($max-$min)/($step_real);


        # check if range is feasible or not(range cannot be less than 1)
         if($range<1)
        {
            print OUT_LOG "WARNING: No proper range could be determined for $name  : defalult range returned as 255  \n";
                $range = 255;
        }
        
        return($range);

    }

##</code><code>##

sub read_tagdata
{
        my  $tag_start= $_[0];     #read the start of the tag
        my $tag_end=$_[1];        #read the end of the tag
        my $temp_buffer_data= $_[2];  #read the tagged line
        my @buffer_data_split;
        $tag_error=($temp_buffer_data=~ s/$tag_start/;/);
        $tag_error1=($temp_buffer_data=~ s/$tag_end/;/);

        if (($tag_error==0) || ($tag_error1==0))
        {
            if(!($tag_start=~ /parameter/) && !($tag_start=~ /intern/) && !($tag_start=~ /out/) && !($tag_start=~ /visu/))
                {
                   print OUT_LOG "WARNING: No data found at $tag_start $tag_end for $name_data  \n";
                       $buffer_data_split[1]="UNKNOWN DATA";
                }
        }
        else
        {
            @buffer_data_split= split(/;/,$temp_buffer_data);
        }
            return($buffer_data_split[1])

}