A C++ software package in C++ for solving the Poisson's
equation on a polygonal domain (possible with cracks) using first order
polynomials on graded meshes. This package provides optimal rates of
convergence even in the case of concave domains (reentrant corners).
A MATLAB software package for solving the
Poisson's equation on a smooth domains using the Generalized Finite
Element Method. Use the program solution.m (to run type solution(n),
where n is the level of refinement).