/**
* Returns the price per $100 face value of a discounted bond
* Excel equivalent: PRICEDISC
*
* @param int Settlement date (UNIX timestamp)
* @param int Maturity date (UNIX timestamp)
* @param float The bond's discount rate
* @param float The bond's redemption value per $100 face value
* @param int Type of day count basis:
FINANCE_COUNT_NASD(default): US(NASD) 30/360
FINANCE_COUNT_ACTUAL_ACTUAL: Actual/actual
FINANCE_COUNT_ACTUAL_360: Actual/360
FINANCE_COUNT_ACTUAL_365: Actual/365
FINANCE_COUNT_EUROPEAN: European 30/360
* @return float
* @static
* @access public
*/
function priceDiscount($settlement, $maturity, $discount, $redemption, $basis = 0)
{
$days_per_year = Math_Finance::daysPerYear(date('Y', $settlement), $basis);
$dsm = Math_Finance::daysDifference($settlement, $maturity, $basis);
return $redemption - $discount * $redemption * $dsm / $days_per_year;
}
function testdepreciationSYD()
{
$this->assertTrue(abs(4090.909091 - Math_Finance::depreciationSYD(30000, 7500, 10, 1)) < FINANCE_PRECISION);
$this->assertTrue(abs(409.090909 - Math_Finance::depreciationSYD(30000, 7500, 10, 10)) < FINANCE_PRECISION);
}
