GetFeatures

API definition	virtual APP_ERROR GetFeatures(int n, float16_t features, const idx_t indices) = 0;
Function	Queries n feature vectors with specified indexes.
Input	int n: number of feature vectors *const idx_t indices**: index of the index to be queried. The length is n.
Output	*float16_t features: feature vector corresponding to an index. The length is n × dim** (vector dimension). Before calling this API, you need to allocate the memory to ensure that the memory size is correct.
Return value	APP_ERROR: return status. For details, see Return Code Reference.
Restrictions	The input parameters must meet the requirements of the implementation class of this class. features and indices must be non-null pointers and their lengths must meet the requirements. Otherwise, an out-of-bounds read/write error may occur, causing program breakdown.

Parent topic: IndexIL