Function p7_BackwardParser 

pub unsafe extern "C" fn p7_BackwardParser(
    dsq: *const ESL_DSQ,
    L: c_int,
    om: *const P7_OPROFILE,
    fwd: *const P7_OMX,
    bck: *mut P7_OMX,
    opt_sc: *mut f32,
) -> c_int