is_isomorphic broken in 5.16.0

• Subject: is_isomorphic broken in 5.16.0
• From: Oliver Kullmann
• Date: Tue, 5 Aug 2008 20:56:36 +0100

Hi,

(%i1) load(graphs);
Evaluation took 0.6320 seconds (0.6429 elapsed) using 14.138 MB.
(%o1) "/home/csoliver/SAT-Algorithmen/OKplatform/ExternalSources/Installations/Maxima/5.16.0/share/maxima/5.16.0/share/contrib/graphs/graphs.mac"
(%i2) is_isomorphic(path_digraph(4),path_digraph(5));
Argument 1 to `DEGREE_SEQUENCE' is not a graph: DIGRAPH
 -- an error.  To debug this try debugmode(true);


So is_isomorphic is broken on digraphs (while it seems to
work on graphs).

Oliver

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