Function Cudd_SubsetWithMaskVars 

pub unsafe extern "C" fn Cudd_SubsetWithMaskVars(
    dd: *mut DdManager,
    f: *mut DdNode,
    vars: *mut *mut DdNode,
    nvars: c_int,
    maskVars: *mut *mut DdNode,
    mvars: c_int,
) -> *mut DdNode