[eigen] BiCGSTAB iteration count

[Parsiad Azimzadeh <parsiad.azimzadeh@xxxxxxxxx>]

Hi,

I am using Eigen 3.2.4. Sometimes, the BiCGSTAB solver gives me solver.iterations() == 0 even when solver.info() == Eigen::Success.

Is this because iterations() returns the number of iterations minus one?

If this is unexpected behaviour, I can create a minimal example for the mailing list.

Thanks,

Parsiad