pub unsafe extern fn cunbdb_(trans: *const c_char, signs: *const c_char, m: *const c_int, p: *const c_int, q: *const c_int, x11: *mut complex_float, ldx11: *const c_int, x12: *mut complex_float, ldx12: *const c_int, x21: *mut complex_float, ldx21: *const c_int, x22: *mut complex_float, ldx22: *const c_int, theta: *mut c_float, phi: *mut c_float, taup1: *mut complex_float, taup2: *mut complex_float, tauq1: *mut complex_float, tauq2: *mut complex_float, work: *mut complex_float, lwork: *const c_int, info: *mut c_int)