FM RP_CALC_DATE_IN_INTERVAL is not exist in BW

Hi Experts,

Is there any FM equivalent to this function Module RP_CALC_DATE_IN_INTERVAL? ,

In my Scenario the report has to run fetching data based on current date -1 i.e if I run the report on 30.06.2015 the report should get the data from 29.06.2015 and also for previous 3 months ( MAR,APR,MAY).

I am facing issue if I run for the month of MAY, or any previous month because of the FEBRUARY month. How to fix this issue.

Regards

Bhaskar