Purpose:
Calculates the accrued interest for a French government periodic interest payment security. Specifically it will perform accrued interest calculations for OATs, EEs, and BTANs. The settlement date is included as one of the days on which interest is earned. It also returns adjusted first coupon values to be passed to other routines.
Special Considerations:
This routine differs from the other accrued interest routine for French government bonds in that the settlement date is counted in the number of days for accrued interest.
Alternatives:
If price and/or yield are required in addition to accrued interest, use the frgb_py_ai routine instead of this routine. If price and/or yield, current yield, estimated Macaulay duration, estimated convexity, interest on interest, etc. are required in addition to accrued interest, use the frgb_risk routine.
Results:
The accrued interest per 100 of maturity value rounded to 3 decimal places is returned.
Error Conditions:
Returned values should be ignored for a non-zero status. See Errors.