pub unsafe extern fn zgebrd_(m: *const lapack_int,
n: *const lapack_int,
a: *mut lapack_complex_double,
lda: *const lapack_int,
d: *mut c_double,
e: *mut c_double,
tauq: *mut lapack_complex_double,
taup: *mut lapack_complex_double,
work: *mut lapack_complex_double,
lwork: *const lapack_int,
info: *mut lapack_int)