Hi, commit 45b1e47372090352ac5af655b32473df2abab23b had some compiling issues and I fixed it. Still, make check does not complete. The timings timing univariate GCD GCD of relatively prime polynomials a and b degree(a) = 100, degree(b) = 50 mod_gcd : 1 1.36e-02 heur_gcd : 1 1.82e-03 sr_gcd: : 1 1.43e+00 Non-trivial GCD, degree(a) = 100, degree(b) = 100 mod_gcd : 51 1.36e-02 heur_gcd : 51 3.64e-03 heur_gcd (old) : 51 5.73e-02 sr_gcd: : 51 2.31e-01 seem to stop at that last output ... I didn't put it through a debugger yet, maybe the test is just too expensive? @Alexei: Is it okay if I put the new files under the copyright of the University of Mainz (as all other files are)? And is it okay if I change the suffices .hpp .tcc? With respect to Richy's "solution" in http://www.ginac.de/pipermail/ginac-devel/2009-February/001544.html, should we do a 1.5 release now/soon? Regards, Jens