pub unsafe extern "C" fn zgebrd_(
m: *mut c_int,
n: *mut c_int,
a: *mut Rcomplex,
lda: *mut c_int,
d: *mut c_double,
e: *mut c_double,
tauq: *mut Rcomplex,
taup: *mut Rcomplex,
work: *mut Rcomplex,
lwork: *mut c_int,
info: *mut c_int,
)