pub unsafe extern "C" fn dtgexc_(
wantq: *const lapack_logical,
wantz: *const lapack_logical,
n: *const lapack_int,
a: *mut c_double,
lda: *const lapack_int,
b: *mut c_double,
ldb: *const lapack_int,
q: *mut c_double,
ldq: *const lapack_int,
z: *mut c_double,
ldz: *const lapack_int,
ifst: *mut lapack_int,
ilst: *mut lapack_int,
work: *mut c_double,
lwork: *const lapack_int,
info: *mut lapack_int
)