pub unsafe extern fn cgtcon_(norm: *const c_char, n: *const lapack_int, dl: *const lapack_complex_float, d: *const lapack_complex_float, du: *const lapack_complex_float, du2: *const lapack_complex_float, ipiv: *const lapack_int, anorm: *const c_float, rcond: *mut c_float, work: *mut lapack_complex_float, info: *mut lapack_int)