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102 lines
3.5 KiB
C++
102 lines
3.5 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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// Functions for comparing Arrow data structures
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#ifndef ARROW_COMPARE_H
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#define ARROW_COMPARE_H
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#include <cstdint>
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#include "arrow/util/visibility.h"
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namespace arrow {
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class Array;
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class DataType;
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class Tensor;
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class SparseTensor;
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struct Scalar;
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static constexpr double kDefaultAbsoluteTolerance = 1E-5;
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/// A container of options for equality comparisons
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class EqualOptions {
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public:
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/// Whether or not NaNs are considered equal.
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bool nans_equal() const { return nans_equal_; }
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/// Return a new EqualOptions object with the "nans_equal" property changed.
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EqualOptions nans_equal(bool v) const {
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auto res = EqualOptions(*this);
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res.nans_equal_ = v;
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return res;
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}
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/// The absolute tolerance for approximate comparisons of floating-point values.
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double atol() const { return atol_; }
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/// Return a new EqualOptions object with the "atol" property changed.
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EqualOptions atol(double v) const {
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auto res = EqualOptions(*this);
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res.atol_ = v;
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return res;
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}
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static EqualOptions Defaults() { return EqualOptions(); }
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protected:
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double atol_ = kDefaultAbsoluteTolerance;
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bool nans_equal_ = false;
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};
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/// Returns true if the arrays are exactly equal
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bool ARROW_EXPORT ArrayEquals(const Array& left, const Array& right,
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const EqualOptions& = EqualOptions::Defaults());
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bool ARROW_EXPORT TensorEquals(const Tensor& left, const Tensor& right);
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/// EXPERIMENTAL: Returns true if the given sparse tensors are exactly equal
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bool ARROW_EXPORT SparseTensorEquals(const SparseTensor& left, const SparseTensor& right);
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/// Returns true if the arrays are approximately equal. For non-floating point
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/// types, this is equivalent to ArrayEquals(left, right)
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bool ARROW_EXPORT ArrayApproxEquals(const Array& left, const Array& right,
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const EqualOptions& = EqualOptions::Defaults());
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/// Returns true if indicated equal-length segment of arrays is exactly equal
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bool ARROW_EXPORT ArrayRangeEquals(const Array& left, const Array& right,
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int64_t start_idx, int64_t end_idx,
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int64_t other_start_idx);
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/// Returns true if the type metadata are exactly equal
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/// \param[in] left a DataType
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/// \param[in] right a DataType
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/// \param[in] check_metadata whether to compare KeyValueMetadata for child
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/// fields
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bool ARROW_EXPORT TypeEquals(const DataType& left, const DataType& right,
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bool check_metadata = true);
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/// Returns true if scalars are equal
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/// \param[in] left a Scalar
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/// \param[in] right a Scalar
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bool ARROW_EXPORT ScalarEquals(const Scalar& left, const Scalar& right);
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} // namespace arrow
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#endif // ARROW_COMPARE_H
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