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# coupon Prev Date

viewed 1548 times and licensed 41 times
Finance namespace
Controller: CodeCogs

C++

## CouponPrevDate

 intcouponPrevDate( int sett int mat Finance::Banking::YearlyFreq freq Finance::Banking::YearBasis basis` = yb_USA` )
Calculate the previous coupon date before the settlement date. This value may be equal to the settlement date.

For a security, the settlement date is the date after issue when the security is traded to the buyer. The maturity date is the date at which the security expires.

### Example 1

```#include <stdio.h>

#include <codecogs/units/date/date.h>
#include <codecogs/units/date/dateymd.h>
#include <codecogs/finance/banking/couponprevdate.h>

int main(void)
{
int prevDate;
int settDate=Units::Date::date(1998, 1, 25);
int maturityDate=Units::Date::date(1999, 11, 15);

prevDate=Finance::Banking::couponPrevDate(settDate,
maturityDate,
Finance::Banking::yf_SemiAnnual);
int y, m, d;

Units::Date::dateYMD(settDate, y, m, d);
printf("settlement=%i/%i/%i\n", y, m, d);

Units::Date::dateYMD(maturityDate, y, m, d);
printf("maturity=%i/%i/%i\n", y, m, d);

Units::Date::dateYMD(prevDate, y, m, d);
printf("previous coupon date=%i/%i/%i\n", y, m, d);

return 0;
}```
Output:
```settlement=1998/1/25
maturity=1999/11/15
previous coupon date=1997/11/15```

The yearly frequency to be used in financial calculations

 Type Description yf_Annual Payments are made annually. yf_SemiAnnual Payments are semi-annual (2 per year). yf_Quarterly Payments are quarterly (4 per year).

### Authors

James Warren (August 2005)

 Type Value Description yb_US 0 US (NASD) 30/360 - As with the European 30/360 (yb_EU, with the additional provision that if the end date occurs on the 31st of a month it is moved to the 1st of the next month if the start date is earlier than the 30th. yb_Act 1 Uses the exact number of elapsed days between the two dates, as well as the exact length of the year. yb_Act360 2 Uses the exact number of elapsed days between two dates but assumes the year only have 360 days yb_Act365 3 Uses the exact number of elapsed days between two dates but assumes the year always has 365 days yb_EU 4 European 30/360 - Each month is assumed to have 30 days, such that the year has only 360 days. Start and end dates that occur on the 31st of a month become equal to the 30th of the same month.

### Parameters

 sett The settlement date, expressed as a serial Julian date. mat The maturity date of the settlement, expressed as a serial Julian date. freq The frequency with which payments are made: basis The year basis to use for the calculation:

### Returns

The previous coupon date of the security.

### Authors

James Warren (August 2005)
##### Source Code

Source code is available when you agree to a GP Licence or buy a Commercial Licence.

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