pub unsafe extern fn LAPACKE_zgttrs(matrix_layout: c_int, trans: c_char, n: lapack_int, nrhs: 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, b: *mut lapack_complex_double, ldb: lapack_int) -> lapack_int