Function lpsolve_sys::add_SOS

pub unsafe extern "C" fn add_SOS(
    lp: *mut lprec, 
    name: *mut c_char, 
    sostype: c_int, 
    priority: c_int, 
    count: c_int, 
    sosvars: *mut c_int, 
    weights: *mut c_double
) -> c_int