Complex Tensor Implementation Missing?

Hi everybody,

i am just simply trying to create a Complex object, and asking myself it is simply not implemented, because i do not find the Class-Type for complex64 or complex128for the Tout parameter for the "df.dtypes.complex" function. In line 5 i just used TFloat32 to get it compiled.

1 Graph g = new Graph();
2 Ops tf = Ops.create(g);
3 Constant r = tf.constant(Float.valueOf((float)5.0));
4 Constant i = tf.constant(Float.valueOf((float)3.0));
5 Complex c = tf.dtypes.complex(r,i, TFloat32.class);

I understand the problem, in line 5:

Exception in thread "main" org.tensorflow.exceptions.TFInvalidArgumentException: Value for attr 'Tout' of double is not in the list of allowed values: complex64, complex128
; NodeDef: {{node Complex}}; Op<name=Complex; signature=real:T, imag:T -> out:Tout; attr=T:type,default=DT_FLOAT,allowed=[DT_FLOAT, DT_DOUBLE]; attr=Tout:type,default=DT_COMPLEX64,allowed=[DT_COMPLEX64, DT_COMPLEX128]>
at org.tensorflow.internal.c_api.AbstractTF_Status.throwExceptionIfNotOK(AbstractTF_Status.java:87)
at org.tensorflow.GraphOperationBuilder.finish(GraphOperationBuilder.java:461)
at org.tensorflow.GraphOperationBuilder.build(GraphOperationBuilder.java:100)
at org.tensorflow.GraphOperationBuilder.build(GraphOperationBuilder.java:71)
at org.tensorflow.op.dtypes.Complex.create(Complex.java:95)
at org.tensorflow.op.DtypesOps.complex(DtypesOps.java:107)
at TensorflowTest.main(TensorflowTest.java:74)

But i do not find a ComplexDataType like TFLoat32

Can anyone bring light into my deepest darkness? I do not find a documentation or an example how it shall be done in java.

Best Regards

Start with org.tensorflow.op.dtypes.Complex.java and org.tensorflow.op.DtypesOps.java, then compare the available Java data-type classes with the Complex op signature shown in the report. Check existing Java documentation or examples for complex64 and complex128 usage. Done should either provide supported Java complex types or document the correct way to use the operation.