Why doesn't scilab-5.0.2 output exact results? Examples: -->sin(%pi) ans = 1.225E-16 -->M=[1,2;3,2]; C=M^-1 * M C = 1. 1.110E-16 1.110E-16 1. I mean, even maxima can do so ;-) http://img300.imageshack.us/img300/3764/bildschirmfotowxmaxima0vc4.png