}
	}
}

func TestAtan(t *testing.T) {
	for i := 0; i < len(vf); i++ {
		if f := Atan(vf[i]); !veryclose(atan[i], f) {
			t.Errorf("Atan(%g) = %g, want %g", vf[i], f, atan[i])
		}
	}
	for i := 0; i < len(vfatanSC); i++ {
		if f := Atan(vfatanSC[i]); !alike(atanSC[i], f) {
			t.Errorf("Atan(%g) = %g, want %g", vfatanSC[i], f, atanSC[i])
		}
	}
}

func TestAtanh(t *testing.T) {

         </artifact>
      </component>
      <component group="xalan" name="serializer" version="2.7.1">
         <artifact name="serializer-2.7.1.jar">
            <sha256 value="a15078d243d4a20b6b4e8ae2f61ed4655e352054e121aada6f7441f1ed445a3c" origin="Verified" reason="Artifact is not signed"/>
         </artifact>
      </component>
      <component group="xalan" name="xalan" version="2.7.1">
         <artifact name="xalan-2.7.1.jar">

  auto dydx = Reciprocal(scope, Add(scope, one, Square(scope, op.input(0))));
  auto dx = Mul(scope, grad_inputs[0], dydx);
  grad_outputs->push_back(dx);
  return scope.status();
}
REGISTER_GRADIENT_OP("Atan", AtanGrad);

Status Atan2Grad(const Scope& scope, const Operation& op,
                 const std::vector<Output>& grad_inputs,
                 std::vector<Output>* grad_outputs) {
  auto y = op.input(0);

      new absl::flat_hash_map<string, std::vector<string>>{
          // Unary
          {"PW",
           {"ComplexAbs", "Angle", "Conj", "Abs", "Acos", "Acosh", "Asin",
            "Atan", "Atanh", "Ceil", "Cos", "Cosh", "Sin", "Exp", "Expm1",
            "Floor", "IsFinite", "IsInf", "IsNan", "Inv", "Reciprocal", "Log",
            "Log1p", "Invert", "LogicalNot", "Ndtri", "Neg", "Rint", "Round",

```
systemProp.javax.xml.parsers.SAXParserFactory=com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl
systemProp.javax.xml.transform.TransformerFactory=com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl
systemProp.javax.xml.parsers.DocumentBuilderFactory=com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl
```