The latest SVN version breaks mdf.c when running without fixed point. Patch: Index: mdf.c ==================================================================--- mdf.c (revision 10563) +++ mdf.c (working copy) @@ -169,6 +169,8 @@ acc[i+1] += (X[i+1]*Y[i] + X[i]*Y[i+1]); } acc[i] += X[i]*Y[i]; + X += N; + Y += N; } } #endif