GetBaseMask

API definition	APP_ERROR GetBaseMask(int64_t count, uint8_t *mask);
Function	Obtains the flag indicating whether a vector is quickly deleted. The bit value 0 indicates that the vector at this position is deleted and is invalid.
Input	int64_t count: valid length of the mask array.
Output	*uint8_t mask**: array indicating whether the vector is deleted.
Return value	APP_ERROR: return status. For details, see Return Code Reference.
Restrictions	The value of count must be [1, ceil(ntotal/8)]. Otherwise, an out-of-bounds read/write error may occur, causing program breakdown. ntotal indicates the number of feature vectors. The length of mask must be greater than or equal to count. Otherwise, an out-of-bounds read/write error may occur, causing program breakdown.

Parent topic: AscendIndexTS