Function SCIPgetVarStrongbranchLast 

pub unsafe extern "C" fn SCIPgetVarStrongbranchLast(
    scip: *mut SCIP,
    var: *mut SCIP_VAR,
    down: *mut f64,
    up: *mut f64,
    downvalid: *mut c_uint,
    upvalid: *mut c_uint,
    solval: *mut f64,
    lpobjval: *mut f64,
) -> SCIP_RETCODE

gets strong branching information on COLUMN variable of the last SCIPgetVarStrongbranch() call; returns values of SCIP_INVALID, if strong branching was not yet called on the given variable; keep in mind, that the returned old values may have nothing to do with the current LP solution

@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_SOLVING - \ref SCIP_STAGE_SOLVED