Initial commit

venv/lib/python3.10/site-packages/pyarrow/include/arrow/ipc/util.h

@@ -0,0 +1,41 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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 <cstdint>
+
+namespace arrow {
+namespace ipc {
+
+// Buffers are padded to 64-byte boundaries (for SIMD)
+static constexpr int32_t kArrowAlignment = 64;
+
+// Tensors are padded to 64-byte boundaries
+static constexpr int32_t kTensorAlignment = 64;
+
+// Align on 8-byte boundaries in IPC
+static constexpr int32_t kArrowIpcAlignment = 8;
+
+static constexpr uint8_t kPaddingBytes[kArrowAlignment] = {0};
+
+static inline int64_t PaddedLength(int64_t nbytes, int32_t alignment = kArrowAlignment) {
+  return ((nbytes + alignment - 1) / alignment) * alignment;
+}
+
+}  // namespace ipc
+}  // namespace arrow