victor shoup wrote:

That's interesting...so the problem lies somewhere else.

No, sorry: the problem goes away if LLL_FP.c is compiled with -O1 or without optimization. Yesterday I was misled by the fact that if you run `make' any number of times on NTL's src directory, things are recompiled again and again. All the best, Roberto -- Prof. Roberto Bagnara Computer Science Group Department of Mathematics, University of Parma, Italy http://www.cs.unipr.it/~bagnara/ mailto:bagnara@cs.unipr.it