From bb2c73195c19312597c7b7620646f653a63f263f Mon Sep 17 00:00:00 2001
From: schnetter <schnetter@2e825fa2-fb71-486d-8b7f-a5ff3f0f6cb8>
Date: Sun, 2 Mar 2003 13:16:04 +0000
Subject: Choose the correct destination regions.

git-svn-id: http://svn.cactuscode.org/arrangements/CactusNumerical/Slab/trunk@17 2e825fa2-fb71-486d-8b7f-a5ff3f0f6cb8
---
 src/slab.c | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 69 insertions(+), 9 deletions(-)

diff --git a/src/slab.c b/src/slab.c
index ee45b77..5a4f8c4 100644
--- a/src/slab.c
+++ b/src/slab.c
@@ -40,6 +40,10 @@ CCTK_FILEVERSION(TAT_Slab_slab_c);
 /* Perform expensive self-checks? */
 #undef CHECK
 
+/* Byte value for poison checks: use 255 for nan, or e.g. 113 for a
+   large value */
+#define POISON_VALUE 254
+
 
 
 #ifdef DEBUG
@@ -613,10 +617,59 @@ int Slab_Transfer (cGH                   * restrict const cctkGH,
     struct bbox const fake_bbox = { 0, 1, 1 };
     struct arrays const fake_arrays
       = { fake_bbox, fake_bbox, fake_bbox, fake_bbox };
+    
+    bbox_check (&fake_bbox);
+    
     info[d].src = fake_arrays;
+    assert (bbox_iscontained (&info[d].src.active, &info[d].src.local));
+    assert (bbox_iscontained (&info[d].src.local, &info[d].src.global));
+    
     info[d].dst = fake_arrays;
+    assert (bbox_iscontained (&info[d].dst.active, &info[d].dst.local));
+    assert (bbox_iscontained (&info[d].dst.local, &info[d].dst.global));
+    
     info[d].xpose = d;
+    assert (info[d].xpose >= 0 && info[d].xpose < SLAB_MAXDIM);
     info[d].flip = 0;
+    assert (info[d].flip == 0 || info[d].flip == 1);
+  }
+  
+  ifcheck {
+    ifdebug printf ("srcinfo:\n");
+    for (d=0; d<SLAB_MAXDIM; ++d) {
+      printf ("   src.global d=%d ", d);
+      bbox_print (&info[d].src.global);
+      printf ("\n");
+      printf ("   src.local  d=%d ", d);
+      bbox_print (&info[d].src.local);
+      printf ("\n");
+      printf ("   src.active d=%d ", d);
+      bbox_print (&info[d].src.active);
+      printf ("\n");
+      printf ("   src.slab   d=%d ", d);
+      bbox_print (&info[d].src.slab);
+      printf ("\n");
+    }
+    ifdebug printf ("dstinfo:\n");
+    for (d=0; d<SLAB_MAXDIM; ++d) {
+      printf ("   dst.global d=%d ", d);
+      bbox_print (&info[d].dst.global);
+      printf ("\n");
+      printf ("   dst.local  d=%d ", d);
+      bbox_print (&info[d].dst.local);
+      printf ("\n");
+      printf ("   dst.active d=%d ", d);
+      bbox_print (&info[d].dst.active);
+      printf ("\n");
+      printf ("   dst.slab   d=%d ", d);
+      bbox_print (&info[d].dst.slab);
+      printf ("\n");
+    }
+    ifdebug printf ("info:\n");
+    for (d=0; d<SLAB_MAXDIM; ++d) {
+      printf ("   xpose      d=%d %d\n", d, info[d].xpose);
+      printf ("   flip       d=%d %d\n", d, info[d].flip);
+    }
   }
   
   {
@@ -643,6 +696,7 @@ int Slab_Transfer (cGH                   * restrict const cctkGH,
     dstlentot *= info[d].dst.local.len;
   }
   
+  /* Check arguments (continued) */
   if (srclentot > 0) assert (srcptr);
   if (dstlentot > 0) assert (dstptr);
   
@@ -702,6 +756,8 @@ int Slab_Transfer (cGH                   * restrict const cctkGH,
         (allinfo[n*SLAB_MAXDIM+d].src.active.str == info[d].src.active.str);
       assert
         (allinfo[n*SLAB_MAXDIM+d].dst.active.str == info[d].dst.active.str);
+      /* 2003-03-01 schnetter: I don't know why the following two
+         should be necessary */
       assert
         (allinfo[n*SLAB_MAXDIM+d].src.slab.str == info[d].src.slab.str);
       assert
@@ -719,7 +775,7 @@ int Slab_Transfer (cGH                   * restrict const cctkGH,
     ifdebug printf ("srcdetail n=%d:\n", n);
     for (d=0; d<SLAB_MAXDIM; ++d) {
       srcdetail[n*SLAB_MAXDIM+d] = allinfo[n*SLAB_MAXDIM+d].src.slab;
-      ifdebug printf ("   src.slab               d=%d ", d);
+      ifdebug printf ("   src.slab                d=%d ", d);
       ifdebug bbox_print (&srcdetail[n*SLAB_MAXDIM+d]);
       ifdebug printf ("\n");
       bbox_clip (&srcdetail[n*SLAB_MAXDIM+d], &info[d].src.active);
@@ -773,7 +829,7 @@ int Slab_Transfer (cGH                   * restrict const cctkGH,
     if (srctype == CCTK_VARIABLE_REAL) {
       CCTK_REAL * restrict const srcdataptr = srcdata;
       CCTK_REAL marker;
-      memset (&marker, -1, sizeof marker);
+      memset (&marker, POISON_VALUE, sizeof marker);
       for (i = 0; i < srcoffset[size]; ++i) {
 	memcpy (&srcdataptr[i], &marker, sizeof marker);
       }
@@ -785,9 +841,8 @@ int Slab_Transfer (cGH                   * restrict const cctkGH,
   for (n = 0; n < size; ++n) {
     ifdebug printf ("dstdetail n=%d:\n", n);
     for (d=0; d<SLAB_MAXDIM; ++d) {
-      struct bbox wherefrom;
-      struct bbox whereto;
-      dstdetail[n*SLAB_MAXDIM+d] = allinfo[n*SLAB_MAXDIM+d].dst.slab;
+/*       dstdetail[n*SLAB_MAXDIM+d] = allinfo[n*SLAB_MAXDIM+d].dst.slab; */
+      dstdetail[n*SLAB_MAXDIM+d] = info[d].dst.slab;
       ifdebug printf ("   dst.slab                d=%d ", d);
       ifdebug bbox_print (&dstdetail[n*SLAB_MAXDIM+d]);
       ifdebug printf ("\n");
@@ -795,7 +850,12 @@ int Slab_Transfer (cGH                   * restrict const cctkGH,
       ifdebug printf ("   clipped with dst.active d=%d ", d);
       ifdebug bbox_print (&dstdetail[n*SLAB_MAXDIM+d]);
       ifdebug printf ("\n");
-      wherefrom = allinfo[n*SLAB_MAXDIM+info[d].xpose].src.slab;
+    }
+    for (d=0; d<SLAB_MAXDIM; ++d) {
+      struct bbox wherefrom;
+      struct bbox whereto;
+/*       wherefrom = allinfo[n*SLAB_MAXDIM+info[d].xpose].src.slab; */
+      wherefrom = info[info[d].xpose].src.slab;
       ifdebug printf ("   src.slab                d=%d ", d);
       ifdebug bbox_print (&dstdetail[n*SLAB_MAXDIM+d]);
       ifdebug printf ("\n");
@@ -838,7 +898,7 @@ int Slab_Transfer (cGH                   * restrict const cctkGH,
     if (dsttype == CCTK_VARIABLE_REAL) {
       CCTK_REAL * restrict const dstdataptr = dstdata;
       CCTK_REAL marker;
-      memset (&marker, -1, sizeof marker);
+      memset (&marker, POISON_VALUE, sizeof marker);
       for (i = 0; i < dstoffset[size]; ++i) {
 	memcpy (&dstdataptr[i], &marker, sizeof marker);
       }
@@ -915,7 +975,7 @@ int Slab_Transfer (cGH                   * restrict const cctkGH,
     if (srctype == CCTK_VARIABLE_REAL) {
       const CCTK_REAL * restrict const srcdataptr = srcdata;
       CCTK_REAL marker;
-      memset (&marker, -1, sizeof marker);
+      memset (&marker, POISON_VALUE, sizeof marker);
       for (i = 0; i < srcoffset[size]; ++i) {
 	assert (memcmp(&srcdataptr[i], &marker, sizeof marker) != 0);
       }
@@ -931,7 +991,7 @@ int Slab_Transfer (cGH                   * restrict const cctkGH,
     if (dsttype == CCTK_VARIABLE_REAL) {
       const CCTK_REAL * restrict const dstdataptr = dstdata;
       CCTK_REAL marker;
-      memset (&marker, -1, sizeof marker);
+      memset (&marker, POISON_VALUE, sizeof marker);
       for (i = 0; i < dstoffset[size]; ++i) {
 	assert (memcmp(&dstdataptr[i], &marker, sizeof marker) != 0);
       }
-- 
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