pub unsafe extern "C" fn dgghrd_(
compq: *const c_char,
compz: *const c_char,
n: *const c_int,
ilo: *const c_int,
ihi: *const c_int,
a: *mut c_double,
lda: *const c_int,
b: *mut c_double,
ldb: *const c_int,
q: *mut c_double,
ldq: *const c_int,
z: *mut c_double,
ldz: *const c_int,
info: *mut c_int,
)