[Cython] aritmetic with arrays in Cython

[Matěj Laitl]

On Tuesday 12 of August 2014 15:18:12 Sturla Molden wrote:
> Another thing to observe is that Eigen depends on the C++ compiler to elide
> temporary arrays.

Either I don't understand you, or you don't understand Eigen. Eigen overloads 
operator=() to circumvent need for temporary arrays. It is *not* an 
optimisation on the compiler part, the code is explicitly written to do so, 
where it is beneficial for performance [1].

	Matěj

[1] http://eigen.tuxfamily.org/dox/TopicLazyEvaluation.html