diff --git a/src/TensorFlowNET.Core/Operations/gen_ops.cs b/src/TensorFlowNET.Core/Operations/gen_ops.cs
index c0d0c5a6..c9693f05 100644
--- a/src/TensorFlowNET.Core/Operations/gen_ops.cs
+++ b/src/TensorFlowNET.Core/Operations/gen_ops.cs
@@ -730,7 +730,7 @@ namespace Tensorflow.Operations
         /// </remarks>
         public static Tensor angle(Tensor input, TF_DataType? Tout = null, string name = "Angle")
         {
-            return tf.Context.ExecuteOp("Angle", name, new ExecuteOpArgs(new object[] { input }));
+            return tf.Context.ExecuteOp("Angle", name, new ExecuteOpArgs(input).SetAttributes(new { Tout = Tout }));
         }
 
         /// <summary>
@@ -4971,13 +4971,16 @@ namespace Tensorflow.Operations
         ///    tf.complex(real, imag) ==&amp;gt; [[2.25 + 4.75j], [3.25 + 5.75j]]
         ///   </code>
         /// </remarks>
-        public static Tensor complex(Tensor real, Tensor imag, TF_DataType? Tout = null, string name = "Complex")
+        public static Tensor complex(Tensor real, Tensor imag, TF_DataType? a_Tout = null, string name = "Complex")
         {
-            return tf.Context.ExecuteOp("Complex", name, new ExecuteOpArgs(new object[] { real, imag })); // sorry, cannot pass Tout, so it only works with complex64. complex128 is not supported yet
+            TF_DataType Tin = real.GetDataType();
+            if (a_Tout is null)
+            {
+                a_Tout = (Tin == TF_DataType.TF_DOUBLE)? TF_DataType.TF_COMPLEX128: TF_DataType.TF_COMPLEX64;
+            }
+            return tf.Context.ExecuteOp("Complex", name, new ExecuteOpArgs(real, imag).SetAttributes(new { T=Tin,  Tout=a_Tout }));
         }
 
-
-
         /// <summary>
         ///    Computes the complex absolute value of a tensor.
         /// </summary>
@@ -4999,7 +5002,7 @@ namespace Tensorflow.Operations
         /// </remarks>
         public static Tensor complex_abs(Tensor x, TF_DataType? Tout = null, string name = "ComplexAbs")
         {
-            return tf.Context.ExecuteOp("ComplexAbs", name, new ExecuteOpArgs(new object[] { x }));
+            return tf.Context.ExecuteOp("ComplexAbs", name, new ExecuteOpArgs(x).SetAttributes(new { Tout = Tout }));
         }
 
         /// <summary>
@@ -13308,9 +13311,12 @@ namespace Tensorflow.Operations
         ///    tf.imag(input) ==&amp;gt; [4.75, 5.75]
         ///   </code>
         /// </remarks>
-        public static Tensor imag(Tensor input, TF_DataType? Tout = null, string name = "Imag")
+        public static Tensor imag(Tensor input, TF_DataType? a_Tout = null, string name = "Imag")
         {
-            return tf.Context.ExecuteOp("Imag", name, new ExecuteOpArgs(new object[] { input }));
+            TF_DataType Tin = input.GetDataType();
+            return tf.Context.ExecuteOp("Imag", name, new ExecuteOpArgs(input).SetAttributes(new { T = Tin, Tout = a_Tout }));
+
+            //            return tf.Context.ExecuteOp("Imag", name, new ExecuteOpArgs(new object[] { input }));
         }
 
         /// <summary>
@@ -23841,9 +23847,12 @@ namespace Tensorflow.Operations
         ///    tf.real(input) ==&amp;gt; [-2.25, 3.25]
         ///   </code>
         /// </remarks>
-        public static Tensor real(Tensor input, TF_DataType? Tout = null, string name = "Real")
+        public static Tensor real(Tensor input, TF_DataType? a_Tout = null, string name = "Real")
         {
-            return tf.Context.ExecuteOp("Real", name, new ExecuteOpArgs(new object[] {input}));
+            TF_DataType Tin = input.GetDataType();
+            return tf.Context.ExecuteOp("Real", name, new ExecuteOpArgs(input).SetAttributes(new { T = Tin, Tout = a_Tout }));
+
+//            return tf.Context.ExecuteOp("Real", name, new ExecuteOpArgs(new object[] {input}));
         }
 
         /// <summary>
diff --git a/test/TensorFlowNET.Graph.UnitTest/ComplexTest.cs b/test/TensorFlowNET.Graph.UnitTest/ComplexTest.cs
index c9b05e61..a57ec929 100644
--- a/test/TensorFlowNET.Graph.UnitTest/ComplexTest.cs
+++ b/test/TensorFlowNET.Graph.UnitTest/ComplexTest.cs
@@ -13,7 +13,8 @@ namespace TensorFlowNET.UnitTest.Basics
     [TestClass]
     public class ComplexTest : EagerModeTestBase
     {
-        [Ignore("Not working")]
+        // Tests for Complex128
+
         [TestMethod]
         public void complex128_basic()
         {
@@ -23,7 +24,7 @@ namespace TensorFlowNET.UnitTest.Basics
             Tensor t_real = tf.constant(d_real, dtype:TF_DataType.TF_DOUBLE);
             Tensor t_imag = tf.constant(d_imag, dtype: TF_DataType.TF_DOUBLE);
 
-            Tensor t_complex = tf.complex(t_real, t_imag, TF_DataType.TF_COMPLEX128);
+            Tensor t_complex = tf.complex(t_real, t_imag);
 
             Tensor t_real_result = tf.math.real(t_complex);
             Tensor t_imag_result = tf.math.imag(t_complex);
@@ -34,9 +35,77 @@ namespace TensorFlowNET.UnitTest.Basics
             double[] d_real_result =n_real_result.ToArray<double>();
             double[] d_imag_result = n_imag_result.ToArray<double>();
 
-            Assert.AreEqual(d_real_result, d_real);
-            Assert.AreEqual(d_imag_result, d_imag);
+            Assert.IsTrue(base.Equal(d_real_result, d_real));
+            Assert.IsTrue(base.Equal(d_imag_result, d_imag));
+        }
+        [TestMethod]
+        public void complex128_abs()
+        {
+            tf.enable_eager_execution();
+
+            double[] d_real = new double[] { -3.0, -5.0, 8.0, 7.0 };
+            double[] d_imag = new double[] { -4.0, 12.0, -15.0, 24.0 };
+
+            double[] d_abs = new double[] { 5.0, 13.0, 17.0, 25.0 };
+
+            Tensor t_real = tf.constant(d_real, dtype: TF_DataType.TF_DOUBLE);
+            Tensor t_imag = tf.constant(d_imag, dtype: TF_DataType.TF_DOUBLE);
+
+            Tensor t_complex = tf.complex(t_real, t_imag);
+
+            Tensor t_abs_result = tf.abs(t_complex);
+
+            double[] d_abs_result = t_abs_result.numpy().ToArray<double>();
+            Assert.IsTrue(base.Equal(d_abs_result, d_abs));
+        }
+        [TestMethod]
+        public void complex128_conj()
+        {
+            double[] d_real = new double[] { -3.0, -5.0, 8.0, 7.0 };
+            double[] d_imag = new double[] { -4.0, 12.0, -15.0, 24.0 };
+
+            double[] d_real_expected = new double[] { -3.0, -5.0, 8.0, 7.0 };
+            double[] d_imag_expected = new double[] { 4.0, -12.0, 15.0, -24.0 };
+
+            Tensor t_real = tf.constant(d_real, dtype: TF_DataType.TF_DOUBLE);
+            Tensor t_imag = tf.constant(d_imag, dtype: TF_DataType.TF_DOUBLE);
+
+            Tensor t_complex = tf.complex(t_real, t_imag, TF_DataType.TF_COMPLEX128);
+
+            Tensor t_result = tf.math.conj(t_complex);
+
+            NDArray n_real_result = tf.math.real(t_result).numpy();
+            NDArray n_imag_result = tf.math.imag(t_result).numpy();
+
+            double[] d_real_result = n_real_result.ToArray<double>();
+            double[] d_imag_result = n_imag_result.ToArray<double>();
+
+            Assert.IsTrue(base.Equal(d_real_result, d_real_expected));
+            Assert.IsTrue(base.Equal(d_imag_result, d_imag_expected));
+        }
+        [TestMethod]
+        public void complex128_angle()
+        {
+            double[] d_real = new double[] { 0.0, 1.0, -1.0, 0.0 };
+            double[] d_imag = new double[] { 1.0, 0.0, -2.0, -3.0 };
+
+            double[] d_expected = new double[] { 1.5707963267948966, 0, -2.0344439357957027, -1.5707963267948966 };
+
+            Tensor t_real = tf.constant(d_real, dtype: TF_DataType.TF_DOUBLE);
+            Tensor t_imag = tf.constant(d_imag, dtype: TF_DataType.TF_DOUBLE);
+
+            Tensor t_complex = tf.complex(t_real, t_imag, TF_DataType.TF_COMPLEX128);
+
+            Tensor t_result = tf.math.angle(t_complex);
+
+            NDArray n_result = t_result.numpy();
+
+            double[] d_result = n_result.ToArray<double>();
+
+            Assert.IsTrue(base.Equal(d_result, d_expected));
         }
+
+        // Tests for Complex64
         [TestMethod]
         public void complex64_basic()
         {
@@ -47,7 +116,7 @@ namespace TensorFlowNET.UnitTest.Basics
             Tensor t_real = tf.constant(d_real, dtype: TF_DataType.TF_FLOAT);
             Tensor t_imag = tf.constant(d_imag, dtype: TF_DataType.TF_FLOAT);
 
-            Tensor t_complex = tf.complex(t_real, t_imag, TF_DataType.TF_COMPLEX64);
+            Tensor t_complex = tf.complex(t_real, t_imag);
 
             Tensor t_real_result = tf.math.real(t_complex);
             Tensor t_imag_result = tf.math.imag(t_complex);