1 files changed, 84 insertions, 0 deletions
diff --git a/compiler/ann-ref/src/ops/internal/Fused.h b/compiler/ann-ref/src/ops/internal/Fused.h
new file mode 100644
index 000000000..fccd72cc3
--- /dev/null
+++ b/compiler/ann-ref/src/ops/internal/Fused.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __FUSED_H__
+#define __FUSED_H__
+
+#include "Dims.h"
+
+#include <cstdint>
+
+enum class FusedActivationFunc : int32_t {
+  NONE = 0,
+  RELU = 1,
+  RELU1 = 2,
+  RELU6 = 3,
+};
+
+enum class FusedActivationFunctionType
+{
+  kNone,
+  kRelu6,
+  kRelu1,
+  kRelu
+};
+
+template <FusedActivationFunctionType Ac> struct ActivationFunctionImpl;
+
+template <> struct ActivationFunctionImpl<FusedActivationFunctionType::kNone>
+{
+  static float Eval(float x) { return x; }
+};
+
+template <> struct ActivationFunctionImpl<FusedActivationFunctionType::kRelu>
+{
+  static float Eval(float x) { return x < 0.f ? 0.f : x; }
+};
+
+template <> struct ActivationFunctionImpl<FusedActivationFunctionType::kRelu1>
+{
+  static float Eval(float x) { return x > 1.f ? 1.f : x < -1.f ? -1.f : x; }
+};
+
+template <> struct ActivationFunctionImpl<FusedActivationFunctionType::kRelu6>
+{
+  static float Eval(float x) { return x > 6.f ? 6.f : x < 0.f ? 0.f : x; }
+};
+
+template <FusedActivationFunctionType Ac> float ActivationFunction(float x)
+{
+  return ActivationFunctionImpl<Ac>::Eval(x);
+}
+
+template <FusedActivationFunctionType Ac>
+void AddBiasAndEvalActivationFunction(const float *bias_data, const Dims<4> &bias_dims,
+                                      float *array_data, const Dims<4> &array_dims)
+{
+  const int bias_size = bias_dims.sizes[3] * bias_dims.strides[3];
+  const int array_size = array_dims.sizes[3] * array_dims.strides[3];
+  DCHECK_EQ((array_size % bias_size), 0);
+  for (int array_offset = 0; array_offset < array_size; array_offset += bias_size)
+  {
+    for (int i = 0; i < bias_size; i++)
+    {
+      array_data[array_offset + i] =
+          ActivationFunction<Ac>(array_data[array_offset + i] + bias_data[i]);
+    }
+  }
+}
+
+#endif // __FUSED_H__