[Nauty] foreshadowing a change to sparse6 format

Gordon Royle gordon at csse.uwa.edu.au
Sat Apr 30 09:41:01 EST 2005

Is there a default "internal format" for sparse graphs?

If one uses readg() to read graphs, then it copes transparently with 
either g6 or s6 as input, but the resulting graph pointer is to a 
bit-packed adjacency matrix... at least, unless I have missed some 
recent changes ...


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