Function SCIPgetRowExactExactLinear 

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

returns the exact linear relaxation of the given linear constraint; may return NULL if no LP row was yet created; the user must not modify the row!