If you were using the non-linear optimisation routine in an previous beta, note that rowvectors and columnvectors have been swapped in this version of newmatnl. You now derive from prototype function classes rather than the solution and least squares classes. Simple examples are included with the library.
This version includes concatenation operators, elementwise products for matrices and GenericMatrices. See the sections on binary operators and unspecified types.
There is now no need to explicitly set the AT&T option in include.h.
I have reorganised the make files for AT&T, Gnu, Microsoft and Watcom. See the files section.