1 files changed, 39 insertions, 0 deletions
diff --git a/src/registersymmetry.c b/src/registersymmetry.c
new file mode 100644
index 0000000..2916efd
--- /dev/null
+++ b/src/registersymmetry.c
@@ -0,0 +1,39 @@
+/* $Header$ */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+
+void Rot180_RegisterSymmetry (CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  int f;
+  CCTK_INT handle;
+  CCTK_INT faces[6];
+  CCTK_INT width[6];
+  CCTK_INT ierr;
+  
+  if (rotating_symmetry_180) {
+    
+    for (f=0; f<6; ++f) {
+      faces[f] = 0;
+      width[f] = 0;
+    }
+    
+    faces[0] = 1;
+    width[0] = cctk_nghostzones[0];
+    
+    handle = SymmetryRegister ("rotating_symmetry_180");
+    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");
+    }
+    
+  }
+}