Function SCIPgetNLPSolstat 

pub unsafe extern "C" fn SCIPgetNLPSolstat(
    scip: *mut SCIP,
) -> SCIP_NLPSOLSTAT

gets solution status of current NLP

@pre This method can be called if SCIP is in one of the following stages: - \ref SCIP_STAGE_INITSOLVE - \ref SCIP_STAGE_SOLVING