venv/lib/python3.10/site-packages/pyarrow/include/arrow/c/dlpack.h

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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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#pragma once

#include "arrow/array/array_base.h"
#include "arrow/c/dlpack_abi.h"

namespace arrow::dlpack {

/// \brief Export Arrow array as DLPack tensor.
///
/// DLMangedTensor is produced as defined by the DLPack protocol,
/// see https://dmlc.github.io/dlpack/latest/.
///
/// Data types for which the protocol is supported are
/// integer and floating-point data types.
///
/// DLPack protocol only supports arrays with one contiguous
/// memory region which means Arrow Arrays with validity buffers
/// are not supported.
///
/// \param[in] arr Arrow array
/// \return DLManagedTensor struct
ARROW_EXPORT
Result<DLManagedTensor*> ExportArray(const std::shared_ptr<Array>& arr);

/// \brief Get DLDevice with enumerator specifying the
/// type of the device data is stored on and index of the
/// device which is 0 by default for CPU.
///
/// \param[in] arr Arrow array
/// \return DLDevice struct
ARROW_EXPORT
Result<DLDevice> ExportDevice(const std::shared_ptr<Array>& arr);

}  // namespace arrow::dlpack