pub unsafe extern "C" fn zgtcon_(
norm: *const c_char,
n: *const lapack_int,
dl: *const lapack_complex_double,
d: *const lapack_complex_double,
du: *const lapack_complex_double,
du2: *const lapack_complex_double,
ipiv: *const lapack_int,
anorm: *const c_double,
rcond: *mut c_double,
work: *mut lapack_complex_double,
info: *mut lapack_int,
)