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