settlement,maturity,frequency,basis!Returns the number of days in the coupon period that contains the settlement date!is ...

!settlement,maturity,frequency,basis!!Returns the number of days in the coupon period that contains the settlement date!is the security's settlement date, expressed as a serial date number!is the security's maturity date, expressed as a serial date number!is the number of coupon payments per year!is the type of day count basis to use!