From 3b3c381963a1bfe12e083928a3abb5a9852b199b Mon Sep 17 00:00:00 2001
From: David Monahan <david.monahan@arm.com>
Date: Tue, 25 Feb 2020 09:03:29 +0000
Subject: IVGCVSW-4439: Adding Elu support to Activation

 * Added CpuRef implementation
 * Added Unit Tests
 * Added Quantizer Test
 * Enabled Tests for Neon and CL backends on fp32 only
 * Added to Serializer

Signed-off-by: David Monahan <david.monahan@arm.com>
Change-Id: Ic23e1797dbc9352b40678c389d7fe2b836b582ea
---
 .../test/layerTests/ActivationTestImpl.cpp         | 58 ++++++++++++++++++++++
 .../test/layerTests/ActivationTestImpl.hpp         | 16 ++++++
 2 files changed, 74 insertions(+)

(limited to 'src/backends/backendsCommon/test')

diff --git a/src/backends/backendsCommon/test/layerTests/ActivationTestImpl.cpp b/src/backends/backendsCommon/test/layerTests/ActivationTestImpl.cpp
index 3f5e6c39e3..1b6e782060 100644
--- a/src/backends/backendsCommon/test/layerTests/ActivationTestImpl.cpp
+++ b/src/backends/backendsCommon/test/layerTests/ActivationTestImpl.cpp
@@ -1016,6 +1016,64 @@ LayerTestResult<int16_t, 4> TanhInt16Test(
 }
 
 
+template<armnn::DataType ArmnnType, typename T = armnn::ResolveType<ArmnnType>>
+LayerTestResult<T, 4> EluTestCommon(
+        armnn::IWorkloadFactory& workloadFactory,
+        const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
+        float qScale,
+        int32_t qOffset)
+{
+    std::vector<float> inputData = {
+            -0.1f, -0.2f, -0.3f, -0.4f,
+            0.1f,  0.2f,  0.3f,  0.4f,
+            -1.0f, -2.0f, -3.0f, -4.0f,
+            1.0f,  2.0f,  3.0f,  4.0f
+    };
+
+
+    const float a = 0.01f;
+    // Calculate output values for input.
+    auto f = [a](float value)
+    {
+        return (value >= 0) ? value : a * (expf(value) - 1);
+    };
+    std::vector<float> outputExpectedData(inputData.size());
+    std::transform(inputData.begin(), inputData.end(), outputExpectedData.begin(), f);
+
+    return SimpleActivationTest<ArmnnType>(workloadFactory,
+                                           memoryManager,
+                                           armnn::ActivationFunction::Elu,
+                                           a,
+                                           0.0f,
+                                           qScale,
+                                           qOffset,
+                                           inputData,
+                                           qScale,
+                                           qOffset,
+                                           outputExpectedData);
+}
+
+LayerTestResult<float, 4> EluTest(
+        armnn::IWorkloadFactory& workloadFactory,
+        const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager)
+{
+    return EluTestCommon<armnn::DataType::Float32>(workloadFactory, memoryManager, 0.1f, 0);
+}
+
+LayerTestResult<uint8_t, 4> EluUint8Test(
+        armnn::IWorkloadFactory& workloadFactory,
+        const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager)
+{
+    return EluTestCommon<armnn::DataType::QAsymmU8>(workloadFactory, memoryManager, 0.1f, 64);
+}
+
+LayerTestResult<int16_t, 4> EluInt16Test(
+        armnn::IWorkloadFactory& workloadFactory,
+        const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager)
+{
+    return EluTestCommon<armnn::DataType::QSymmS16>(workloadFactory, memoryManager, 0.1f, 0);
+}
+
 
 template<armnn::DataType ArmnnType, typename T = armnn::ResolveType<ArmnnType>>
 LayerTestResult<T,4> CompareActivationTestImpl(
diff --git a/src/backends/backendsCommon/test/layerTests/ActivationTestImpl.hpp b/src/backends/backendsCommon/test/layerTests/ActivationTestImpl.hpp
index 2251ceb8dd..28301188d5 100644
--- a/src/backends/backendsCommon/test/layerTests/ActivationTestImpl.hpp
+++ b/src/backends/backendsCommon/test/layerTests/ActivationTestImpl.hpp
@@ -148,6 +148,22 @@ LayerTestResult<int16_t, 4> LeakyReLuInt16Test(
         armnn::IWorkloadFactory& workloadFactory,
         const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager);
 
+//
+// Elu
+//
+
+LayerTestResult<float, 4> EluTest(
+        armnn::IWorkloadFactory& workloadFactory,
+        const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager);
+
+LayerTestResult<uint8_t, 4> EluUint8Test(
+        armnn::IWorkloadFactory& workloadFactory,
+        const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager);
+
+LayerTestResult<int16_t, 4> EluInt16Test(
+        armnn::IWorkloadFactory& workloadFactory,
+        const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager);
+
 //
 // Abs
 //
-- 
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