pub type dher_unb_ft = Option<unsafe extern "C" fn(uploa: uplo_t, conjx: conj_t, conjh: conj_t, m: dim_t, alpha: *mut f64, x: *mut f64, incx: inc_t, a: *mut f64, rs_a: inc_t, cs_a: inc_t, cntx: *mut cntx_t)>;
