1 files changed, 41 insertions, 0 deletions
diff --git a/src/RegisterSymmetries.c b/src/RegisterSymmetries.c
new file mode 100644
index 0000000..c679f3f
--- /dev/null
+++ b/src/RegisterSymmetries.c
@@ -0,0 +1,41 @@
+/* $Header$ */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+
+#include "Symmetry.h"
+
+void DecodeSymParameters3D(int sym[6]);
+
+void RegisterSymmetryBoundaries (CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  int sym[6];
+  int n;
+  CCTK_INT faces[6];
+  CCTK_INT width[6];
+  CCTK_INT handle;
+  CCTK_INT ierr;
+  
+  DecodeSymParameters3D (sym);
+  
+  for (n=0; n<6; ++n) {
+    faces[n] = sym[n];
+    width[n] = cctk_nghostzones[n/2];
+  }
+  
+  handle = SymmetryRegister ("reflection_symmetry");
+  if (handle < 0)
+  {
+    CCTK_WARN (0, "Could not register symmetry boundary condition");
+  }
+
+  ierr = SymmetryRegisterGrid (cctkGH, handle, faces, width);
+  if (ierr < 0)
+  {
+    CCTK_WARN (0, "Could not register the symmetry boundaries -- probably some other thorn has already registered the same boundary faces for a different symmetry");
+  }
+}