1 files changed, 49 insertions, 0 deletions
diff --git a/runtimes/libs/misc/src/tensor/IndexFormatter.cpp b/runtimes/libs/misc/src/tensor/IndexFormatter.cpp
new file mode 100644
index 000000000..c949db7a8
--- /dev/null
+++ b/runtimes/libs/misc/src/tensor/IndexFormatter.cpp
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2018 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 "misc/tensor/IndexFormatter.h"
+
+#include <cassert>
+
+namespace nnfw
+{
+namespace misc
+{
+namespace tensor
+{
+
+std::ostream &operator<<(std::ostream &os, const IndexFormatter &fmt)
+{
+  const auto rank = fmt.index().rank();
+
+  assert(rank > 0);
+
+  os << fmt.index().at(0);
+
+  if (rank > 1)
+  {
+    for (uint32_t axis = 1; axis < rank; ++axis)
+    {
+      os << ", " << fmt.index().at(axis);
+    }
+  }
+
+  return os;
+}
+
+} // namespace tensor
+} // namespace misc
+} // namespace nnfw