chore: import upstream snapshot with attribution

python/paddle/base/dygraph_utils.py

@@ -0,0 +1,39 @@
+# Copyright (c) 2018 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.
+
+from paddle import _legacy_C_ops
+
+from .framework import dygraph_only
+
+
+@dygraph_only
+def _append_activation_in_dygraph(input, act=None, use_cudnn=None):
+    """Append activation in dygraph mode.
+
+        Args:
+            input: the input variable.
+            act: activation type
+            use_cudnn: if use cudnn
+
+    Return the Variable after append activation
+    """
+    if act is None:
+        return input
+
+    attrs = ()
+    if use_cudnn:
+        attrs = ('use_cudnn', use_cudnn)
+
+    act_op = getattr(_legacy_C_ops, act)
+    return act_op(input, *attrs)