hash64_2(v);}

cond function that always returns true

Reads positive edges after the first one.

Eats the first (specially) encoded edge, which stores a sign bit. Should ideally be inlined, but let the compiler figure it out.

#bitset bytes for a given block size. rounds up to the nearest multiple of 8 bytes.

prereq: u changes from L to H or H to L, tables are already resized called after moving lower level must insert first, then delete change the status o

gives up ownership of space

creates an in-memory copy of the graph.

returns a pointer and a length

Convert to dense but keep sparse representation if it exists.

returns the number of bytes for a given block_size note that the block_size must be a multiple of 8 TODO: should we be rounding to the nearest multipl

cleanUp the wedges, let c1 = c1+c2+c3-c4-c5 called before tables are cleaned up if del_flag is true, we delete 0 counts wedges, use edgesD if del_flag