}
	if testing.Short() {
		// Depends on syslog daemon running, and sometimes it's not.
		t.Skip("skipping syslog test during -short")
	}

	s, err := New(LOG_INFO|LOG_USER, "the_tag")
	if err != nil {
		if err.Error() == "Unix syslog delivery error" {
			t.Skip("skipping: syslogd not running")
		}
		t.Fatalf("New() failed: %s", err)
	}
	// Don't send any messages.
	s.Close()
}

    // Take Difference of both estimates: (f(theta + eps) - f(theta - eps)).
    TF_RETURN_IF_ERROR(
        ops::Sub(ctx, fPlus.get(), fMinus.get(), f_outputs, "sub_top"));
    AbstractTensorHandlePtr fDiff(f_outputs[0]);

    // Calculate using the difference quotient definition:
    // (f(theta + eps) - f(theta - eps)) / (2 * eps).
    TF_RETURN_IF_ERROR(

}

// ExampleExp computes Euler's identity.
func ExampleExp() {
	fmt.Printf("%.1f", cmplx.Exp(1i*math.Pi)+1)
	// Output: (0.0+0.0i)
}

func ExamplePolar() {
	r, theta := cmplx.Polar(2i)
	fmt.Printf("r: %.1f, θ: %.1f*π", r, theta/math.Pi)
	// Output: r: 2.0, θ: 0.5*π

	}
	modulus := Abs(x)
	if modulus == 0 {
		return complex(0, 0)
	}
	r := math.Pow(modulus, real(y))
	arg := Phase(x)
	theta := real(y) * arg
	if imag(y) != 0 {
		r *= math.Exp(-imag(y) * arg)
		theta += imag(y) * math.Log(modulus)
	}
	s, c := math.Sincos(theta)
	return complex(r*c, r*s)

	for i := 0; i < len(vc); i++ {
		if r, theta := Polar(vc[i]); !veryclose(polar[i].r, r) && !veryclose(polar[i].theta, theta) {
			t.Errorf("Polar(%g) = %g, %g want %g, %g", vc[i], r, theta, polar[i].r, polar[i].theta)
		}
	}
	for i := 0; i < len(vcPolarSC); i++ {
		if r, theta := Polar(vcPolarSC[i]); !alike(polarSC[i].r, r) && !alike(polarSC[i].theta, theta) {

  memset(&option, 0, sizeof(option));
  option.name = const_cast<char*>(name.c_str());
  TF_Filesystem_Option_Value option_value;
  memset(&option_value, 0, sizeof(option_value));
  option_value.type_tag = TF_Filesystem_Option_Type_Buffer;
  option_value.num_values = values.size();
  std::vector<TF_Filesystem_Option_Value_Union> option_values(values.size());
  for (size_t i = 0; i < values.size(); i++) {

	"𝔱":                             "\U0001d531",
	"∴":                          "\u2234",
	"∴":                       "\u2234",
	"θ":                           "\u03b8",
	"ϑ":                        "\u03d1",
	"ϑ":                          "\u03d1",
	"≈":                     "\u2248",
	"∼":                        "\u223c",

		"tfr;":                             '\U0001D531',
		"there4;":                          '\U00002234',
		"therefore;":                       '\U00002234',
		"theta;":                           '\U000003B8',
		"thetasym;":                        '\U000003D1',
		"thetav;":                          '\U000003D1',
		"thickapprox;":                     '\U00002248',
		"thicksim;":                        '\U0000223C',

// TestTags verifies that the -tags argument controls which files to check.
func TestTags(t *testing.T) {
	t.Parallel()
	for tag, wantFile := range map[string]int{
		"testtag":     1, // file1
		"x testtag y": 1,
		"othertag":    2,
	} {
		tag, wantFile := tag, wantFile
		t.Run(tag, func(t *testing.T) {
			t.Parallel()
			t.Logf("-tags=%s", tag)
			cmd := vetCmd(t, "-tags="+tag, "tagtest")
			output, err := cmd.CombinedOutput()

        entities.put("Delta", "\u0394");
        entities.put("Epsilon", "\u0395");
        entities.put("Zeta", "\u0396");
        entities.put("Eta", "\u0397");
        entities.put("Theta", "\u0398");
        entities.put("Iota", "\u0399");
        entities.put("Kappa", "\u039a");
        entities.put("Lambda", "\u039b");
        entities.put("Mu", "\u039c");
        entities.put("Nu", "\u039d");