OS: Ubuntu 11.04<br><br>Compiled with g++: g++ -o test test.cpp -lcln -lginac<br><br>GiNaC ver: 1.60<br><br>Sample version of program attached. Program generates Hermite polynomial to high degree. It then subs into it a series of numbers. The output RANDOMLY generates an incorrect answer. No answer after a substitution should ever be zero, yet zeros inevitably appear. The problem occurs once out of every 3 executions, on average.<br>