1 files changed, 51 insertions, 0 deletions
diff --git a/compiler/mir-interpreter/src/ops/ELU.cpp b/compiler/mir-interpreter/src/ops/ELU.cpp
new file mode 100644
index 000000000..0cd76baf4
--- /dev/null
+++ b/compiler/mir-interpreter/src/ops/ELU.cpp
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * 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.
+ */
+
+#include "ReLU.h"
+#include "Common.h"
+
+#include "mir/ShapeRange.h"
+#include "mir/Tensor.h"
+
+#include <cmath>
+
+namespace mir_interpreter
+{
+
+template <typename T> struct ELUImpl
+{
+  static void run(const mir::TensorVariant &arg, float alpha, mir::TensorVariant &result);
+};
+
+template <typename T>
+void ELUImpl<T>::run(const mir::TensorVariant &arg, float alpha, mir::TensorVariant &result)
+{
+  mir::Tensor<T> arg_accessor(arg);
+  mir::Tensor<T> res_accessor(result);
+
+  for (const auto &index : mir::ShapeRange(result.getShape()))
+  {
+    const T x = arg_accessor.at(index);
+    res_accessor.at(index) = x < 0 ? alpha * (std::exp(x) - 1) : x;
+  }
+}
+
+void ELU(const mir::TensorVariant &arg, float alpha, mir::TensorVariant &result)
+{
+  dispatch<ELUImpl>(result.getElementType(), arg, alpha, result);
+}
+
+} // namespace mir_interpreter