IVGCVSW-5400 'TfLiteDelegate: FLOOR operator support'

* Added FLOOR operator support to Arm NN TfLiteDelegate

Signed-off-by: Sadik Armagan <sadik.armagan@arm.com>
Change-Id: I986ce8c5a825f509e0f8b3d257fd5b60834c322f
diff --git a/delegate/src/test/RoundTest.cpp b/delegate/src/test/RoundTest.cpp
new file mode 100644
index 0000000..9d323f3
--- /dev/null
+++ b/delegate/src/test/RoundTest.cpp
@@ -0,0 +1,72 @@
+//
+// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "RoundTestHelper.hpp"
+
+#include <armnn_delegate.hpp>
+
+#include <flatbuffers/flatbuffers.h>
+#include <tensorflow/lite/schema/schema_generated.h>
+
+#include <doctest/doctest.h>
+
+namespace armnnDelegate
+{
+
+void FloorFp32Test(std::vector<armnn::BackendId>& backends)
+{
+    std::vector<int32_t> inputShape  {1, 3, 2, 3};
+    std::vector<int32_t> outputShape {1, 3, 2, 3};
+
+    std::vector<float> inputValues { -37.5f, -15.2f, -8.76f, -2.0f, -1.5f, -1.3f, -0.5f, -0.4f, 0.0f,
+                                     1.0f, 0.4f, 0.5f, 1.3f, 1.5f, 2.0f, 8.76f, 15.2f, 37.5f };
+
+    std::vector<float> expectedOutputValues { -38.0f, -16.0f, -9.0f, -2.0f, -2.0f, -2.0f, -1.0f, -1.0f, 0.0f,
+                                              1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 2.0f, 8.0f, 15.0f, 37.0f };
+
+    RoundTest<float>(tflite::BuiltinOperator_FLOOR,
+                     ::tflite::TensorType_FLOAT32,
+                     backends,
+                     inputShape,
+                     inputValues,
+                     expectedOutputValues);
+}
+
+// FLOOR Test Suite
+TEST_SUITE("FLOOR_CpuRefTests")
+{
+
+TEST_CASE ("FLOOR_Fp32_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = {armnn::Compute::CpuRef};
+    FloorFp32Test(backends);
+}
+
+}
+
+TEST_SUITE("FLOOR_CpuAccTests")
+{
+
+TEST_CASE ("FLOOR_Fp32_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = {armnn::Compute::CpuAcc};
+    FloorFp32Test(backends);
+}
+
+}
+
+TEST_SUITE("FLOOR_GpuAccTests")
+{
+
+TEST_CASE ("FLOOR_Fp32_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = {armnn::Compute::GpuAcc};
+    FloorFp32Test(backends);
+}
+
+}
+// End of FLOOR Test Suite
+
+} // namespace armnnDelegate
\ No newline at end of file