* Added all missing examples, dodgy Jamfile still
* Fixed attributions and Jamfile indent
* One readme per example: synopsis, build and exec reqs
* Cleaned up example/convolve2d.cpp
* Added example target to root Jamfile
Closes#436
The output type must be floating point, thus a check was added to make sure it
is the case. Though I had to add specific cases for float32_t as std::is_floating_point does not
consider it a floating point type
The accumulate part was wrong, it multiplied by delta_t on every sum, which is wrong
Use 8 way nabla compute.
This is just different discretization of Laplace operator
https://en.wikipedia.org/wiki/Discrete_Laplace_operator
Laplace stencils are now the same as in mathematical notation
The new function will provide a uniform way to generate stencils
by making sure directions are indexed properly
Add only required stencil points:
The 5 points Laplace stencil is now adding only required points and not assuming that others are zero
