qingqing01
diff --git a/‎paddle/extension.h‎
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diff --git a/‎paddle/fluid/extension/include/all.h‎
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diff --git a/‎paddle/fluid/extension/include/dispatch.h‎
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diff --git a/‎paddle/fluid/extension/include/dtype.h‎
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+/* Copyright (c) 2021 PaddlePaddle Authors. 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. */
+
+#pragma once
+
+// All paddle apis in C++ frontend
+#include "paddle/fluid/extension/include/all.h"
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+/* Copyright (c) 2021 PaddlePaddle Authors. 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. */
+
+#pragma once
+
+#if !defined(_MSC_VER) && __cplusplus < 199711L
+#error C++11 or later compatible compiler is required to use Paddle.
+#endif
+
+#include "paddle/fluid/extension/include/dispatch.h"
+#include "paddle/fluid/extension/include/dtype.h"
+#include "paddle/fluid/extension/include/op_meta_info.h"
+#include "paddle/fluid/extension/include/place.h"
+#include "paddle/fluid/extension/include/tensor.h"
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+/* Copyright (c) 2021 PaddlePaddle Authors. 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. */
+
+#pragma once
+
+#include "paddle/fluid/extension/include/dtype.h"
+
+namespace paddle {
+
+#define PD_PRIVATE_CASE_TYPE_USING_HINT(NAME, enum_type, type, HINT, ...) \
+  case enum_type: {                                                       \
+    using HINT = type;                                                    \
+    __VA_ARGS__();                                                        \
+    break;                                                                \
+  }
+
+#define PD_PRIVATE_CASE_TYPE(NAME, enum_type, type, ...) \
+  PD_PRIVATE_CASE_TYPE_USING_HINT(NAME, enum_type, type, data_t, __VA_ARGS__)
+
+#define PD_DISPATCH_FLOATING_TYPES(TYPE, NAME, ...)                          \
+  [&] {                                                                      \
+    const auto& dtype = TYPE;                                                \
+    switch (dtype) {                                                         \
+      PD_PRIVATE_CASE_TYPE(NAME, ::paddle::DataType::FLOAT32, float,         \
+                           __VA_ARGS__)                                      \
+      PD_PRIVATE_CASE_TYPE(NAME, ::paddle::DataType::FLOAT64, double,        \
+                           __VA_ARGS__)                                      \
+      default:                                                               \
+        throw std::runtime_error("function not implemented for this type."); \
+    }                                                                        \
+  }()
+
+// TODD(chenweihang): implement other DISPATH macros in next PR
+
+}  // namespace paddle
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+/* Copyright (c) 2021 PaddlePaddle Authors. 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. */
+
+#pragma once
+#include "paddle/fluid/platform/bfloat16.h"
+#include "paddle/fluid/platform/complex128.h"
+#include "paddle/fluid/platform/complex64.h"
+#include "paddle/fluid/platform/float16.h"
+
+namespace paddle {
+
+enum DataType {
+  FLOAT32,
+  FLOAT64,
+  BFLOAT16,
+  COMPLEX128,
+  COMPLEX64,
+  FLOAT16,
+  INT64,
+  INT32,
+  INT16,
+  UINT8,
+  INT8,
+  BOOL,
+  // TODO(JiabinYang) support more data types if needed.
+};
+
+}  // namespace paddle