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

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// to you under the Apache License, Version 2.0 (the
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// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
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#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