Added support for Quick C, and for the Sun compiler acc. The output routines now accept a value of linelength . The new graph has vertices labelled in the given order. The command M can be used to get more accurate timings for easy graphs. The cpu time reported is the total used divided by 100.
Some graphs are much faster as a result, but some easy graphs are a little slower.
There are no known problems with these versions. I don't have access to a Cray. A bug in nauty.h was uncovered, and was fixed in version 1.6. Thanks to Miro Kraetzl. Five compilers have been successfully tested.