pub unsafe extern "C" fn dtgex2_(
wantq: *mut c_int,
wantz: *mut c_int,
n: *mut c_int,
a: *mut c_double,
lda: *mut c_int,
b: *mut c_double,
ldb: *mut c_int,
q: *mut c_double,
ldq: *mut c_int,
z: *mut c_double,
ldz: *mut c_int,
j1: *mut c_int,
n1: *mut c_int,
n2: *mut c_int,
work: *mut c_double,
lwork: *mut c_int,
info: *mut c_int,
)