cavis/libnd4j/include/helpers/ShapeBuilders.h

70 lines
3.5 KiB
C++

/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://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.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
//
// @author raver119@gmail.com
//
#ifndef DEV_TESTS_SHAPEBUILDERS_H
#define DEV_TESTS_SHAPEBUILDERS_H
#include <vector>
#include <helpers/shape.h>
#include <system/pointercast.h>
#include <memory/Workspace.h>
#include <array/DataType.h>
#include <array/ArrayOptions.h>
namespace sd {
class ND4J_EXPORT ShapeBuilders {
public:
static Nd4jLong* createScalarShapeInfo(sd::DataType dataType, sd::memory::Workspace* workspace = nullptr);
static Nd4jLong* createVectorShapeInfo(const sd::DataType dataType, const Nd4jLong length, sd::memory::Workspace* workspace = nullptr);
/**
* create shapeInfo for given order basing on shape stored in shapeOnly vector
* memory allocation for shapeInfo is on given workspace
*/
static Nd4jLong* createShapeInfo(const sd::DataType dataType, const char order, int rank, const Nd4jLong* shapeOnly, memory::Workspace* workspace = nullptr);
static Nd4jLong* createShapeInfo(const sd::DataType dataType, const char order, const std::vector<Nd4jLong>& shapeOnly, memory::Workspace* workspace = nullptr);
static Nd4jLong* createShapeInfo(const sd::DataType dataType, const char order, const std::initializer_list<Nd4jLong>& shapeOnly, memory::Workspace* workspace = nullptr);
/**
* allocates memory for new shapeInfo and copy all information from inShapeInfo to new shapeInfo
* if copyStrides is false then strides for new shapeInfo are recalculated
*/
static Nd4jLong* copyShapeInfo(const Nd4jLong* inShapeInfo, const bool copyStrides, memory::Workspace* workspace = nullptr);
static Nd4jLong* copyShapeInfoAndType(const Nd4jLong* inShapeInfo, const DataType dtype, const bool copyStrides, memory::Workspace* workspace = nullptr);
static Nd4jLong* copyShapeInfoAndType(const Nd4jLong* inShapeInfo, const Nd4jLong* shapeInfoToGetTypeFrom, const bool copyStrides, memory::Workspace* workspace = nullptr);
/**
* allocates memory for new shapeInfo and copy all information from inShapeInfo to new shapeInfo except dimensions in dimsToExclude (unit dimensions) and corresponding strides
* for example inShapeInfo is {3, 2,1,3,1,4, 12,12,4,4,1, 16384,1,99}, dimsToExclude = {2,3}, dimsSize = 2
* then outShapeInfo will contain {3, 2,3,4, 12,4,1, 16384,1,99}
*/
static Nd4jLong* copyShapeInfoWithoutUnites(const Nd4jLong* inShapeInfo, const int dimsSize, const int* dimsToExclude, memory::Workspace* workspace = nullptr);
static Nd4jLong* emptyShapeInfo(const sd::DataType dataType, memory::Workspace* workspace = nullptr);
static Nd4jLong* emptyShapeInfo(const sd::DataType dataType, const char order, const std::vector<Nd4jLong> &shape, memory::Workspace* workspace = nullptr);
};
}
#endif //DEV_TESTS_SHAPEBUILDERS_H