sandbox/bugs/QuadtreeLevelZeroGhostcells.c
Inconsistent 5x5 stencil on root level of trees
#define BGHOSTS 2
int main() {
init_grid(2);
scalar A[];
foreach_level(0)
A[] = 1.;
foreach_dimension() {
A[left] = neumann (0);
A[right] = neumann (0);
}
boundary_level({A}, 0);
foreach_level(0)
foreach_neighbor()
fprintf (stderr, "%g %g %g\n", x, y, A[]);
}
There are NaNs in some locations.
set size ratio -1
plot 'log' u 1:2:3 w labels