Function CPXsolution 

pub unsafe extern "C" fn CPXsolution(
    env: CPXCENVptr,
    lp: CPXCLPptr,
    lpstat_p: *mut c_int,
    objval_p: *mut f64,
    x: *mut f64,
    pi: *mut f64,
    slack: *mut f64,
    dj: *mut f64,
) -> c_int