IVGCVSW-1803 : add Ref Subtraction layer

Change-Id: I4c019d626f9369245eca6d549bbe7a28e141f198

1 files changed, 41 insertions, 0 deletions

diff --git a/src/armnn/backends/RefWorkloads/RefSubtractionUint8Workload.cpp b/src/armnn/backends/RefWorkloads/RefSubtractionUint8Workload.cpp
new file mode 100644
index 0000000000..8066762e48
--- /dev/null
+++ b/src/armnn/backends/RefWorkloads/RefSubtractionUint8Workload.cpp
@@ -0,0 +1,41 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "RefSubtractionUint8Workload.hpp"
+
+#include "Subtraction.hpp"
+#include "RefWorkloadUtils.hpp"
+
+#include "Profiling.hpp"
+
+#include <vector>
+
+namespace armnn
+{
+
+void RefSubtractionUint8Workload::Execute() const
+{
+    ARMNN_SCOPED_PROFILING_EVENT(Compute::CpuRef, "RefSubtractionUint8Workload_Execute");
+
+    const TensorInfo& inputInfo0 = GetTensorInfo(m_Data.m_Inputs[0]);
+    const TensorInfo& inputInfo1 = GetTensorInfo(m_Data.m_Inputs[1]);
+    const TensorInfo& outputInfo = GetTensorInfo(m_Data.m_Outputs[0]);
+
+    auto dequant0 = Dequantize(GetInputTensorDataU8(0, m_Data), inputInfo0);
+    auto dequant1 = Dequantize(GetInputTensorDataU8(1, m_Data), inputInfo1);
+
+    std::vector<float> results(outputInfo.GetNumElements());
+
+    Subtraction(inputInfo0.GetShape(),
+                inputInfo1.GetShape(),
+                outputInfo.GetShape(),
+                dequant0.data(),
+                dequant1.data(),
+                results.data());
+
+    Quantize(GetOutputTensorDataU8(0, m_Data), results.data(), outputInfo);
+}
+
+} //namespace armnn