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 c_float_complex, ldx11: *const c_int, x12: *mut c_float_complex, ldx12: *const c_int, x21: *mut c_float_complex, ldx21: *const c_int, x22: *mut c_float_complex, ldx22: *const c_int, theta: *mut c_float, phi: *mut c_float, taup1: *mut c_float_complex, taup2: *mut c_float_complex, tauq1: *mut c_float_complex, tauq2: *mut c_float_complex, work: *mut c_float_complex, lwork: *const c_int, info: *mut c_int)