pub unsafe extern "C" fn dtrexc_(
compq: *const c_char,
n: *const lapack_int,
t: *mut c_double,
ldt: *const lapack_int,
q: *mut c_double,
ldq: *const lapack_int,
ifst: *const lapack_int,
ilst: *mut lapack_int,
work: *mut c_double,
info: *mut lapack_int,
)