From 25bd6f5c57afe0a8e4d51dd987d385a6f4663cd3 Mon Sep 17 00:00:00 2001
From: schnetter <schnetter@f69c4107-0314-4c4f-9ad4-17e986b73f4a>
Date: Sun, 11 Jun 2006 20:56:54 +0000
Subject: Replace the temporary solution, which checks whether PUGH is active,
 with a better way to determine which boundaries are outer boundaries,
 symmetry boundaries, interprocessor boundaries, or penalty boundaries.

git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/trunk@73 f69c4107-0314-4c4f-9ad4-17e986b73f4a
---
 src/call_derivs.c | 73 ++++++++++++++++++++++++-------------------------------
 1 file changed, 32 insertions(+), 41 deletions(-)

diff --git a/src/call_derivs.c b/src/call_derivs.c
index 53009a5..5dd4530 100644
--- a/src/call_derivs.c
+++ b/src/call_derivs.c
@@ -4,7 +4,31 @@
 
 #include "util_ErrorCodes.h"
 #include "util_Table.h"
-#include "cctk_DefineThorn.h"
+
+
+
+/* Determine whether a boundary with the symmetry handle symbnd is a
+   "regular" symmetry boundary (where the SBP stencils should not be
+   modified), or an outer boundary (or a multi-block boundary), where
+   the SBP stencils need to be modified.  */
+static int is_regular_symbnd (int const symbnd, int const pen_sym_handle)
+{
+  /* On an outer boundary (which is not a symmetry boundary), symbnd <
+     0.  */
+  if (symbnd < 0) return 0;
+  
+  if (pen_sym_handle >= 0) {
+    /* If the symmetry boundary is a multi-block boundary, then symbnd
+     = pen_sym_handle.  However, we can only check that if thorn
+     MultiPatch is active, i.e., if pen_sym_handle >= 0.  */
+    if (symbnd == pen_sym_handle) return 0;
+  }
+  
+  /* This is a "regular" symmetry boundary.  */
+  return 1;
+}
+
+
 
 void DiffGv ( const CCTK_POINTER_TO_CONST cctkGH_, const CCTK_INT dir,
               const CCTK_REAL *var, CCTK_REAL *dvar,
@@ -137,60 +161,27 @@ void DiffGv ( const CCTK_POINTER_TO_CONST cctkGH_, const CCTK_INT dir,
     CCTK_WARN(0,"Util_TableGetIntArray returned error");
   }
 
-
- pen_sym_handle = SymmetryHandleOfName ( "multipatch" );
-  
-#ifdef CACTUSPUGH_PUGH /* a little hack to make this work with 
-                          pugh (without reflection sym, though) */
- for (i=0; i<6; i++){
-     symbnd[i] = 1; 
-     pen_sym_handle=1; 
- }
-#endif
+  pen_sym_handle = SymmetryHandleOfName ( "multipatch" );
 
   switch(dir) {
   case 0: {
     delta = CCTK_DELTA_SPACE(0);
-    if ( symbnd[0] == pen_sym_handle && cctk_bbox[0] == 1 ) {
-      bb[0] = 1;
-    } else {
-      bb[0] = 0;
-    }
-    if ( symbnd[1] == pen_sym_handle && cctk_bbox[1] == 1 ) {
-      bb[1] = 1;
-    } else {
-      bb[1] = 0;
-    }
+    bb[0] = cctk_bbox[0] && ! is_regular_symbnd (symbnd[0], pen_sym_handle);
+    bb[1] = cctk_bbox[1] && ! is_regular_symbnd (symbnd[1], pen_sym_handle);
     gsize = cctk_nghostzones[0];
     break;
   }
   case 1: {
     delta = CCTK_DELTA_SPACE(1);
-    if ( symbnd[2] == pen_sym_handle && cctk_bbox[2] == 1) {
-      bb[0] = 1;
-    } else {
-      bb[0] = 0;
-    }
-    if ( symbnd[3] == pen_sym_handle && cctk_bbox[3] == 1) {
-      bb[1] = 1;
-    } else {
-      bb[1] = 0;
-    }
+    bb[0] = cctk_bbox[2] && ! is_regular_symbnd (symbnd[2], pen_sym_handle);
+    bb[1] = cctk_bbox[3] && ! is_regular_symbnd (symbnd[3], pen_sym_handle);
     gsize = cctk_nghostzones[1];
     break;
   }
   case 2: {
     delta = CCTK_DELTA_SPACE(2);
-    if ( symbnd[4] == pen_sym_handle && cctk_bbox[4] == 1) {
-      bb[0] = 1;
-    } else {
-      bb[0] = 0;
-    }
-    if ( symbnd[4] == pen_sym_handle && cctk_bbox[5] == 1) {
-      bb[1] = 1;
-    } else {
-      bb[1] = 0;
-    }
+    bb[0] = cctk_bbox[4] && ! is_regular_symbnd (symbnd[4], pen_sym_handle);
+    bb[1] = cctk_bbox[5] && ! is_regular_symbnd (symbnd[5], pen_sym_handle);
     gsize = cctk_nghostzones[2];
     break;
   }
-- 
cgit v1.2.3