For the following structI would like to have an overloaded operator<< to print the mat member to std::cout. I tried
I'm investigating ways to speed up a large section of C++ code, which has automatic derivatives for computing jacobians. This involves doing some amount of work in the actual residuals, but the majority of the work (based on profiled execution time) is in calculating the jacobians.
So I was wondering if it is possible to set a static variable inside a function scope only once. For example consider this function: