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-rw-r--r--ell_grid_solve.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/ell_grid_solve.h b/ell_grid_solve.h
index 601eac9..7ce61a0 100644
--- a/ell_grid_solve.h
+++ b/ell_grid_solve.h
@@ -156,6 +156,11 @@ typedef struct EGSContext {
NDArray *u;
/**
+ * u including the ghost zones.
+ */
+ NDArray *u_base;
+
+ /**
* Values of the right-hand side.
*
* Allocated by the solver in mg2di_egs_alloc(), owned by the solver.