<?php
/* * *************************************************************
 * Copyright notice
 *
 * (c) 2014 Chi Hoang (info@chihoang.de)
 *  All rights reserved
 *
 *  For family 10h processor the right formula is:
 *   (100*(Fid+16))/(2^Did)
 *  Inverse formulas are:
 *    fid = (((2^Did) * freq) / 100) - 16
 *    did = log2 ((100 * (fid +16))/f)
 * **************************************************************/

    class convertFreq {

        var $fixme;
        var $cpu=array();
        var $input=array();

        function convertFreq ($cpu,$type,$input) {
            $this->fixme=$cpu;
            $this->cpu=$type;
            $this->input=$input;
        }

        function tofreq () {

            $fixme=($this->fixme[$this->cpu]);
            $c=0;
            foreach ($this->input as $key=>$arr)
            {
                $vid=abs(($arr["vcore"]-1.55)/0.0125);

                $did=0;
                do {
                    $fid = (((1 << (int) $did) * (float) $arr["freq"]) / 100) - $fixme;
                    if ($fid < 0)
                    {
                        $did++;
                    }

                } while ($fid < 0);

                if ($fid > 63)
                {
                    $fid = 63;
                }
                $result[$c] = array ("vid"=>$vid,
                                     "fid"=>$fid,
                                     "did"=>$did);
                $c++;
            }

            return $result;
        }
     }
?>

// -----------------------------------------------------------------------------------------------------------------------

<?php
/* * *************************************************************
 * Copyright notice
 *
 * (c) 2014 Chi Hoang (info@chihoang.de)
 *  All rights reserved
 * **************************************************************/
  require_once("main.php");

  $cpu=array("1"=>16,"2"=>8);
  $type="2";
  $input=array("0"=> array("freq"=>"2400","vcore"=>"1.175"),
               "1"=> array("freq"=>"2000","vcore"=>"1.175")
               );

  $convert=new convertFreq($cpu,$type,$input);
  $result=$convert->tofreq();
  print_r($result);
?>