Function CPXstrongbranch 

pub unsafe extern "C" fn CPXstrongbranch(
    env: CPXCENVptr,
    lp: CPXLPptr,
    indices: *const c_int,
    cnt: c_int,
    downobj: *mut f64,
    upobj: *mut f64,
    itlim: c_int,
) -> c_int