GitLab

Renamed Accumulator->Transform, since Accumulator does not make so much sense for Endomorphism

Added 'Function' and 'Accumulator' to interface, which can be used as endomorphism/univar/bivar function/accumulators.

Modifying template parameter ordering to A, B, C.

Updated examples accordingly to use these.

Switched from function pointers to std::function, and made some tests use Lambdas. There are useful things in C++11 after all.

Added tests for sparse univariate custom function that performs integration of a sparse matrix of forces based on a cutoff. It reveals limitations in the current sparse summation implementation.

Got univariate functions working, added some two tests for them, including force integration. Added a function to compute the additive inverse of a tensor to be used for groups, as the normal infrastructure cannot currently handle this case, since it uses the notion of an inverse of the multiplicative identity

Fixes to custom elementwise functions. Partially completed work on an expression based interface for them. Added endomorphism test.

Merged dt_aux_sort, dt_aux_rw and whatever was already moved to int_sort into sparse_rw

Some work on int_tensor.cxx (now untyped_tensor.cxx) and associated dependencies