ONNX export: Logical operators

Author: vandanavk

python/mxnet/contrib/onnx/mx2onnx/_op_translations.py

@@ -1545,3 +1545,31 @@ def convert_sum(node, **kwargs):
             name=name
         )
     return [node]
+
+@mx_op.register("broadcast_logical_and")
+def convert_broadcast_logical_and(node, **kwargs):
+    """Map MXNet's broadcast logical and operator attributes to onnx's Add operator
+    and return the created node.
+    """
+    return create_basic_op_node('And', node, kwargs)
+
+@mx_op.register("broadcast_logical_or")
+def convert_broadcast_logical_or(node, **kwargs):
+    """Map MXNet's broadcast logical or operator attributes to onnx's Or operator
+    and return the created node.
+    """
+    return create_basic_op_node('Or', node, kwargs)
+
+@mx_op.register("broadcast_logical_xor")
+def convert_broadcast_logical_xor(node, **kwargs):
+    """Map MXNet's broadcast logical xor operator attributes to onnx's Xor operator
+    and return the created node.
+    """
+    return create_basic_op_node('Xor', node, kwargs)
+
+@mx_op.register("logical_not")
+def convert_logical_not(node, **kwargs):
+    """Map MXNet's logical not operator attributes to onnx's Not operator
+    and return the created node.
+    """
+    return create_basic_op_node('Not', node, kwargs)

tests/python-pytest/onnx/export/mxnet_export_test.py

@@ -238,6 +238,48 @@ def test_square():
 
     npt.assert_almost_equal(result, numpy_op)
 
+
+def get_int_inputs(interval, shape):
+    """Helper to get integer input of given shape and range"""
+    assert len(interval) == len(shape)
+    inputs = []
+    input_tensors = []
+    for idx in range(len(interval)):
+        low, high = interval[idx]
+        inputs.append(np.random.randint(low, high, size=shape[idx]).astype("float32"))
+        input_tensors.append(helper.make_tensor_value_info("input"+str(idx+1),
+                                                        TensorProto.FLOAT, shape=shape[idx]))
+
+    return inputs, input_tensors
+
+
+@with_seed()
+def test_logical_ops():
+    """Test for logical and, or, not, xor operators"""
+    def test_ops(op_name, inputs, input_tensors, numpy_op):
+        outputs = [helper.make_tensor_value_info("output", TensorProto.FLOAT, shape=np.shape(inputs[0]))]
+
+        nodes = [helper.make_node(op_name, ["input"+str(i+1) for i in range(len(inputs))], ["output"])]
+        graph = helper.make_graph(nodes,
+                                  op_name + "_test",
+                                  input_tensors,
+                                  outputs)
+        model = helper.make_model(graph)
+        bkd_rep = backend.prepare(model)
+        output = bkd_rep.run(inputs)
+        npt.assert_almost_equal(output[0], numpy_op)
+
+    input_data, input_tensor = get_int_inputs([(0, 2), (0, 2)], [(3, 4, 5), (3, 4, 5)])
+    test_ops("And", input_data, input_tensor,
+             np.logical_and(input_data[0], input_data[1]).astype(np.float32))
+    test_ops("Or", input_data, input_tensor,
+             np.logical_or(input_data[0], input_data[1]).astype(np.float32))
+    test_ops("Xor", input_data, input_tensor,
+             np.logical_xor(input_data[0], input_data[1]).astype(np.float32))
+    test_ops("Not", [input_data[0]], [input_tensor[0]],
+             np.logical_not(input_data[0]).astype(np.float32))
+
+
 if __name__ == '__main__':
     test_models("bvlc_googlenet", (1, 3, 224, 224), (1, 1000))
     test_models("bvlc_reference_caffenet", (1, 3, 224, 224), (1, 1000))

tests/python-pytest/onnx/import/test_cases.py

@@ -55,7 +55,6 @@
     'test_argmax',
     'test_argmin',
     'test_min',
-    'test_logical_',
     # enabling partial test cases for matmul
     'test_matmul_3d',
     'test_matmul_4d',