[Coin-lpsolver] how to get basic variable indices

[Amit Partani]

Hi,
I am trying to get the indices of Basic variables in Clp. As of now I am 
using pivotVariable() function. But it returns one of the index (20) which 
is more than number of variables (18) in the system. All the constraints are 
equality type. Is there any better way to access basic indices (e.g. 
CPXgetbase in CPLEX). Some detailed answer will be really appreciated.

Thanks,
Amit