PRICEDISC(settlement,maturity,discount,redemption,basis)
settlement: settlement date
maturity: maturity date
discount: annual rate at which to discount
redemption: amount received at maturity
basis: calendar basis
PRICEDISC calculates the price per $100 face value of a bond that does not pay interest at maturity.
If basis is 0, then the US 30/360 method is used. If basis is 1, then actual number of days is used. If basis is 2, then actual number of days is used within a month, but years are considered only 360 days. If basis is 3, then actual number of days is used within a month, but years are always considered 365 days. If basis is 4, then the European 30/360 method is used.