Function SCIPgetRowSetppc 

pub unsafe extern "C" fn SCIPgetRowSetppc(
    scip: *mut SCIP,
    cons: *mut SCIP_CONS,
) -> *mut SCIP_ROW

returns the linear relaxation of the given set partitioning / packing / covering constraint; may return NULL if no LP row was yet created; the user must not modify the row!