switch ($param)
    {
	case "md":
	    if ($level < 40) $res = 35.8052 * exp(0.0293 * $level);
	    else $res = -24.8581661 + 3.4389099 * $level;
	    break;
	case "ma":
	    if ($level < 40) $res = 7.9594 * exp(0.0686 * $level);
	    else $res = 21.58 * exp(0.045 * $level);
	    break;
	case "pd":
	    if ($level < 40) $res = 48.9335 * exp(0.0293 * $level);
	    else $res = 67.2518 * exp(0.0217 * $level);
	    break;
	case "pa":
	    if ($level < 40) $res = 11.4903 * exp(0.0692 * $level);
	    else $res = 28.5276 * exp(0.0472 * $level);
	    break;
	case "mp":
	    if ($level < 40) $res = -100.62 + 14.4 * $level;
	    else $res = -697.733333 + 29 * $level;
	    $dec = 2;
	    break;
	case "hp":
	    if ($level < 40) $res = 127.6828 * exp(0.0513 * $level);
	    else $res = -1102.0639 + 50.6979 * $level;
	    break;
	case "sp":
	    if ($level < 40) $res = 6.0833 * exp(0.0758 * $level);
	    else $res = 16.3043 * exp(0.0522 * $level);
	    $dec = 0;
	    break;
	default:	// exp
	    if ($level < 40) $res = 61127.8388 * exp(0.1412 * $level);
	    else $res = 154520.0 * exp(0.1126 * $level);
	    $dec = 3;
	    break;
    }