IsMultipleOf64 returns whether v is a multiple of 64.

LeastSignificantBitMask returns a bit mask to return the least significant bits for a value starting from the bit index passed in.

NewBitRunReader returns a reader for the given bitmap, offset and length that grabs runs of the same value bit at a time for easy iteration.

NewReverseSetBitRunReader returns a SetBitRunReader like NewSetBitRunReader, except it will return runs starting from the end of the bitmap until it reaches startOffset rather than starting at startOffset and reading from there.

NewSetBitRunReader returns a SetBitRunReader for the bitmap starting at startOffset which will read numvalues bits.

VisitSetBitRuns is just a convenience function for calling NewSetBitRunReader and then VisitSetBitRuns.

BitRun represents a run of bits with the same value of length Len with Set representing if the group of bits were 1 or 0.

SetBitRun describes a run of contiguous set bits in a bitmap with Pos being the starting position of the run and Length being the number of bits.

BitRunReader is an interface that is usable by multiple callers to provide multiple types of bit run readers such as a reverse reader and so on.

SetBitRunReader is an interface for reading groups of contiguous set bits from a bitmap.

VisitFn is a callback function for visiting runs of contiguous bits.