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<?php defined('SYSPATH') or die('No direct script access.');
/**
* Number helper class.
*
* $Id: num.php 1710 2008-01-14 01:12:01Z PugFish $
*
* @package Number Helper
* @author Kohana Team
* @copyright (c) 2007-2008 Kohana Team
* @license http://kohanaphp.com/license.html
*/
class num {

/**
* Round a number to the nearest nth
*
* @param integer number to round
* @param integer number to round to
* @return integer
*/
public static function round($number, $nearest = 5)
{
return round($number / $nearest) * $nearest;
}

/**
* @author Michal Kliment
* Fill number with nulls (on start)
* @param int $number
* @param int $position
* @return string
*/
public static function null_fill($number, $position)
{
$len = strlen($number);
$null_str = '';
for ($i=0;$i<($position-$len);$i++)
$null_str .= '0';

return $null_str.$number;
}

/**
* Negates number to opposite number / Negates number to given number
* Negates all number / Negates only numbers for given level and operand
*
* @author Michal Kliment
* @param integer $number
* @param integer $to_number
* @param integer $level
* @param integer $op
* @return integer
*/
public static function negation($number, $to_number = NULL, $level = NULL, $op = 1)
{
// number in which it will negate
$to_number = ($to_number) ? $to_number : $number*(-1);

// level is given
if ($level !== NULL)
{
switch ($op)
{
// >
case 1:
return ($number > $level) ? $to_number : $number;
break;
// <
case -1:
return ($number < $level) ? $to_number : $number;
break;
// =
case 0:
return ($number == $level) ? $to_number : $number;
break;
// for all other
default:
return $to_number;
break;
}
}
else
// level is not given
return $to_number;
}

/**
* @author Michal Kliment
* Replace decimal comma with decimal point
* @param int $number
* @return string
*/
public static function decimal_point($number)
{
return str_replace(',', '.', $number);
}


}
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