1# tensor.h 2 3 4## Overview 5 6Provides tensor-related APIs, which can be used to create tensors and modify tensor information. These APIs are non-thread-safe. 7 8**Since** 9 109 11 12**Related Modules** 13 14[MindSpore](_mind_spore.md) 15 16 17## Summary 18 19 20### Types 21 22| Name| Description| 23| -------- | -------- | 24| [OH_AI_TensorHandle](_mind_spore.md#oh_ai_tensorhandle) | Defines the handle of a tensor object.| 25| [OH_AI_AllocatorHandle](_mind_spore.md#oh_ai_allocatorhandle) | Handle of the memory allocator.| 26 27 28### Functions 29 30| Name| Description| 31| -------- | -------- | 32| [OH_AI_TensorCreate](_mind_spore.md#oh_ai_tensorcreate) (const char \*name, OH_AI_DataType type, const int64_t \*shape, <br>size_t shape_num, const void \*data, size_t data_len) | Creates a tensor object.| 33| [OH_AI_TensorDestroy](_mind_spore.md#oh_ai_tensordestroy) (OH_AI_TensorHandle \*tensor) | Destroys a tensor object.| 34| [OH_AI_TensorClone](_mind_spore.md#oh_ai_tensorclone) (OH_AI_TensorHandle tensor) | Clones a tensor.| 35| [OH_AI_TensorSetName](_mind_spore.md#oh_ai_tensorsetname) (OH_AI_TensorHandle tensor, const char \*name) | Sets the tensor name.| 36| [OH_AI_TensorGetName](_mind_spore.md#oh_ai_tensorgetname) (const OH_AI_TensorHandle tensor) | Obtains the tensor name.| 37| [OH_AI_TensorSetDataType](_mind_spore.md#oh_ai_tensorsetdatatype) (OH_AI_TensorHandle tensor, OH_AI_DataType type) | Sets the data type of a tensor.| 38| [OH_AI_TensorGetDataType](_mind_spore.md#oh_ai_tensorgetdatatype) (const OH_AI_TensorHandle tensor) | Obtains the tensor type.| 39| [OH_AI_TensorSetShape](_mind_spore.md#oh_ai_tensorsetshape) (OH_AI_TensorHandle tensor, <br>const int64_t \*shape, size_t shape_num) | Sets the tensor shape.| 40| [OH_AI_TensorGetShape](_mind_spore.md#oh_ai_tensorgetshape) (const OH_AI_TensorHandle tensor, size_t \*shape_num) | Obtains the tensor shape.| 41| [OH_AI_TensorSetFormat](_mind_spore.md#oh_ai_tensorsetformat) (OH_AI_TensorHandle tensor, OH_AI_Format format) | Sets the tensor data format.| 42| [OH_AI_TensorGetFormat](_mind_spore.md#oh_ai_tensorgetformat) (const OH_AI_TensorHandle tensor) | Obtains the tensor data format.| 43| [OH_AI_TensorSetData](_mind_spore.md#oh_ai_tensorsetdata) (OH_AI_TensorHandle tensor, void \*data) | Sets the tensor data.| 44| [OH_AI_TensorGetData](_mind_spore.md#oh_ai_tensorgetdata) (const OH_AI_TensorHandle tensor) | Obtains the pointer to tensor data.| 45| [OH_AI_TensorGetMutableData](_mind_spore.md#oh_ai_tensorgetmutabledata) (const OH_AI_TensorHandle tensor) | Obtains the pointer to variable tensor data. If the data is empty, memory will be allocated.| 46| [OH_AI_TensorGetElementNum](_mind_spore.md#oh_ai_tensorgetelementnum) (const OH_AI_TensorHandle tensor) | Obtains the number of tensor elements.| 47| [OH_AI_TensorGetDataSize](_mind_spore.md#oh_ai_tensorgetdatasize) (const OH_AI_TensorHandle tensor) | Obtains the number of bytes of the tensor data.| 48| [OH_AI_TensorSetUserData](_mind_spore.md#oh_ai_tensorsetuserdata) ([OH_AI_TensorHandle](_mind_spore.md#oh_ai_tensorhandle) tensor, void \*data, size_t data_size) | Sets the tensor as the user data. This function allows you to reuse user data as the model input, which helps to reduce data copy by one time.| 49| [OH_AI_TensorGetAllocator](_mind_spore.md#oh_ai_tensorgetallocator)([OH_AI_TensorHandle](_mind_spore.md#oh_ai_tensorhandle) tensor) | Obtains a memory allocator.| 50| [OH_AI_TensorSetAllocator](_mind_spore.md#oh_ai_tensorsetallocator)([OH_AI_TensorHandle](_mind_spore.md#oh_ai_tensorhandle) tensor, [OH_AI_AllocatorHandle](_mind_spore.md#oh_ai_allocatorhandle) allocator) | Sets the memory allocator.| 51