bitmap UInt64 to bitmap UInt32
时间: 2023-08-17 13:06:46 浏览: 43
引用\[1\]:RoaringBitmap64是由一系列RoaringBitmap32表示的,其中RoaringBitmap32使用两种容器结构:Array Container和Bitmap Container。Array Container存放稀疏的数据,Bitmap Container存放稠密的数据。RoaringBitmap64的实现方式是将前32位存储为key,后32位对应的RoaringBitmap32作为value存储在map中。\[1\]
引用\[2\]:在创建Bitmap表时,使用的数据类型是UInt64,即64位的bitmap。\[2\]
引用\[3\]:在新建画像的存储表时,也使用了UInt64作为bitmap的数据类型。\[3\]
问题:如何将bitmap的UInt64转换为UInt32?
回答:要将bitmap的UInt64转换为UInt32,可以使用位运算来实现。可以将UInt64的高32位和低32位分别转换为UInt32,然后进行合并。具体的转换方法可以根据具体的编程语言和需求来实现。
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