PriceMaths::roundPrecision

static function roundPrecision($value)
{
	if (!isset(self::$valuePrecision))
	{
		self::$valuePrecision = (int)MainConfigOption::get('sale', 'value_precision');
		if (self::$valuePrecision < 0)
		{
			self::$valuePrecision = 2;
		}
	}

	return round((float)$value, self::$valuePrecision);
}