Math problem (C++ preferred, but also .NET or other languages)

I need to compare some melcpstrums (audio coefficients). For example, the 11 mceps for one audio are mcepsA[0]=4.93723823 mcepsA[1]=2.3972343 mcepsA[2]=1.2305712 etc. Now I need to compare these with 11 different mceps, for example with mcepsB[0]=3.9902323 mcepsB[1]=1.988323 mcepsB[2]=9.93723 etc. I am calculating the audible difference like this: double diff=0; for (unsigned int i=0;i mcepsB[i]) { diff+=mcepsA[i]-mcepsB[i]; } else { diff+=mcepsB[i]-mcepsA[i]; } } However, storing all the mcep values is really problematic for me. Unfortunately I am not a mathematician. Is there somebody here who recognizes this problem and perhaps knows a solution for me where I can perhaps store all mcepsA in one value instead of having 11 of them and who can write code for that? I am looking for a working solution.