Function SCIPaddVarBranchFactor 

pub unsafe extern "C" fn SCIPaddVarBranchFactor(
    scip: *mut SCIP,
    var: *mut SCIP_VAR,
    addfactor: f64,
) -> SCIP_RETCODE

adds the given value to the branch factor of the variable

@return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref SCIP_Retcode “SCIP_RETCODE” for a complete list of error codes.

@pre This method can be called if @p scip is in one of the following stages: - \ref SCIP_STAGE_PROBLEM - \ref SCIP_STAGE_TRANSFORMING - \ref SCIP_STAGE_TRANSFORMED - \ref SCIP_STAGE_INITPRESOLVE - \ref SCIP_STAGE_PRESOLVING - \ref SCIP_STAGE_EXITPRESOLVE - \ref SCIP_STAGE_PRESOLVED - \ref SCIP_STAGE_SOLVING