[Nauty] version 2.7rc5 of nauty&Traces available
Brendan McKay
Brendan.McKay at anu.edu.au
Thu Apr 2 00:24:42 AEDT 2020
Yet another release candidate for nauty&Traces version 2.7 is available:
nauty27rc5.
This version:
* A bug in nauty.h caused compilation failure on some hardware without
popcnt instructions. You didn't encounter this if you didn't get
compile-time error messages about the macro POPCOUNT. Thanks to Anthony
Matos for reporting this error.
* Tweak the configure script to more reliably detect standard function
declarations and to improve the test for the POPCNT instruction.
* The maximum number of vertices is NAUTY_INFINITY-2, where
NAUTY_INFINITY is currently defined to be the constant 2000000002. Long
ago this constant was called INFINITY, but that became a standard macro
in C for the infinite double constant. Until this version, nauty.h
defined INFINITY to equal NAUTY_INFINITY if INFINITY was not defined in
<math.h>, but that was a standards violation and now it is gone. If you
have programs so old that they use INFINITY with the old nauty meaning,
you need to change it to NAUTY_INFINITY.
Traces has not changed since the previous version.
As always, please report any problems with installation or usage. We
hope that this version will become the official release.
http://users.cecs.anu.edu.au/~bdm/nauty/
<http://users.cecs.anu.edu.au/~bdm/nauty/>
http://pallini.di.uniroma1.it <http://pallini.di.uniroma1.it/>
Take care.
Brendan McKay and Adolfo Pipero.
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