Updated Poisson 9-pt and 27-pt stencils to generate matrices with sorted diagonal offsets
Updated Poisson 9-pt and 27-pt stencils to generate matrices with sorted diagonal offsets

cusplibrary/cusplibrary,cusplibrary/cusplibrary,sdalton1/cusplibrary,sdalton1/cusplibrary,sdalton1/cusplibrary,cusplibrary/cusplibrary,sdalton1/cusplibrary,cusplibrary/cusplibrary