124 lines
4.6 KiB
C++
124 lines
4.6 KiB
C++
/*******************************************************************************
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* Copyright (c) 2015-2018 Skymind, Inc.
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* Copyright (c) 2019-2020 Konduit K.K.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://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, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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//
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// @author raver119@gmail.com
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// @author AbdelRauf
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#ifndef DEV_TESTS_SHAPEDESCRIPTOR_H
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#define DEV_TESTS_SHAPEDESCRIPTOR_H
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#include <unordered_map>
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#include <vector>
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#include <system/dll.h>
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#include <system/pointercast.h>
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#include <array/ArrayOptions.h>
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#include <array/DataType.h>
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#include <initializer_list>
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namespace sd {
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#define SHAPE_DESC_OK 0
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#define SHAPE_DESC_INCORRECT_STRIDES 1 //strides does not match shapes
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#define SHAPE_DESC_INCORRECT_EWS 2 //ews neither matches stride nor continuity
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#define SHAPE_DESC_INCORRECT_RANK 4 //rank > 32 or shape size and rank does not match
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class ND4J_EXPORT ShapeDescriptor {
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private:
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int _rank = 0;
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std::vector<Nd4jLong> _shape;
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std::vector<Nd4jLong> _strides;
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Nd4jLong _ews = 1;
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char _order = 'c';
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DataType _dataType;
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Nd4jLong _extraProperties = 0;
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Nd4jLong _paddedAllocSize = 0;
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public:
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ShapeDescriptor(const ShapeDescriptor &other);
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ShapeDescriptor(const Nd4jLong *shapeInfo, bool inheritDtype = true);
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explicit ShapeDescriptor(const Nd4jLong *shapeInfo, const sd::DataType dtypeOverride);
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explicit ShapeDescriptor(const Nd4jLong *shapeInfo, const Nd4jLong *dtypeOverride);
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explicit ShapeDescriptor(const Nd4jLong *shapeInfo, const Nd4jLong *dtypeOverride, const Nd4jLong *orderOverride);
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explicit ShapeDescriptor(const DataType type, const Nd4jLong length);
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explicit ShapeDescriptor(const DataType type, const char order, const Nd4jLong *shape, const int rank);
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explicit ShapeDescriptor(const DataType type, const char order, const std::initializer_list<Nd4jLong> &shape);
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explicit ShapeDescriptor(const DataType type, const char order, const std::vector<Nd4jLong> &shape);
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explicit ShapeDescriptor(const DataType type, const char order, const std::vector<Nd4jLong> &shape, const std::vector<Nd4jLong> &strides);
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explicit ShapeDescriptor(const DataType type, const char order, const std::vector<Nd4jLong> &shape, const std::vector<Nd4jLong> &strides, const Nd4jLong ews);
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explicit ShapeDescriptor(const DataType type, const char order, const Nd4jLong *shape, const Nd4jLong *strides, const int rank, Nd4jLong ews, Nd4jLong extras);
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ShapeDescriptor() = default;
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~ShapeDescriptor() = default;
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int rank() const;
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Nd4jLong ews() const;
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Nd4jLong arrLength() const;
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char order() const;
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DataType dataType() const;
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bool isEmpty() const;
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std::vector<Nd4jLong>& shape();
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std::vector<Nd4jLong>& strides();
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//returns minimal allocation length
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Nd4jLong allocLength() const;
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//returns Status for the correctness
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Nd4jLong validate() const;
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// we use default copy assignment operator
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ShapeDescriptor& operator=(const ShapeDescriptor& other) = default;
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// we use default move assignment operator
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ShapeDescriptor& operator=(ShapeDescriptor&& other) noexcept = default;
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// equal to operator
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bool operator==(const ShapeDescriptor &other) const;
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// less than operator
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bool operator<(const ShapeDescriptor &other) const;
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Nd4jLong* toShapeInfo() const;
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static ShapeDescriptor emptyDescriptor(const DataType type);
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static ShapeDescriptor scalarDescriptor(const DataType type);
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static ShapeDescriptor vectorDescriptor(const Nd4jLong length, const DataType type);
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//create Descriptor with padded buffer.
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static ShapeDescriptor paddedBufferDescriptor(const DataType type, const char order, const std::vector<Nd4jLong>& shape, const std::vector<Nd4jLong>& paddings);
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};
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}
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#ifndef __JAVACPP_HACK__
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namespace std {
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template<>
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class ND4J_EXPORT hash<sd::ShapeDescriptor> {
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public:
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size_t operator()(const sd::ShapeDescriptor &k) const;
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};
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}
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#endif
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#endif //DEV_TESTS_SHAPEDESCRIPTOR_H
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