chore: import upstream snapshot with attribution

python/paddle/functional.py

@@ -0,0 +1,36 @@
+# Copyright (c) 2025 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 .compat import split
+from .tensor.creation import meshgrid
+from .tensor.einsum import einsum
+from .tensor.linalg import norm
+from .tensor.manipulation import (
+    atleast_1d,
+    atleast_2d,
+    atleast_3d,
+    unique_consecutive,
+)
+from .tensor.math import broadcast_shapes
+
+__all__ = [
+    'atleast_1d',
+    'atleast_2d',
+    'atleast_3d',
+    'broadcast_shapes',
+    "einsum",
+    "norm",
+    'split',
+    'unique_consecutive',
+    "meshgrid",
+]