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. It also returns adjusted first coupon values to be passed to other routines.
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.
Notes:
In addition to accrued interest, other values are returned by the routine - see outputs in Parameter Definition section.
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.