1 files changed, 146 insertions, 0 deletions
diff --git a/Carpet/CarpetLib/src/accumulate_3d.cc b/Carpet/CarpetLib/src/accumulate_3d.cc
new file mode 100644
index 000000000..f57cc06c0
--- /dev/null
+++ b/Carpet/CarpetLib/src/accumulate_3d.cc
@@ -0,0 +1,146 @@
+#include <algorithm>
+#include <cassert>
+#include <cmath>
+#include <cstdlib>
+#include <iostream>
+
+#include <cctk.h>
+#include <cctk_Parameters.h>
+
+#include "operator_prototypes_3d.hh"
+#include "typeprops.hh"
+
+using namespace std;
+
+
+
+namespace CarpetLib {
+
+
+  
+#define SRCIND3(i,j,k)                                  \
+  index3 (srcioff + (i), srcjoff + (j), srckoff + (k),  \
+          srciext, srcjext, srckext)
+#define DSTIND3(i,j,k)                                  \
+  index3 (dstioff + (i), dstjoff + (j), dstkoff + (k),  \
+          dstiext, dstjext, dstkext)
+  
+  
+  
+  template <typename T>
+  void
+  accumulate_3d (T const * restrict const src,
+                 ivect3 const & restrict srcext,
+                 T * restrict const dst,
+                 ivect3 const & restrict dstext,
+                 ibbox3 const & restrict srcbbox,
+                 ibbox3 const & restrict dstbbox,
+                 ibbox3 const & restrict regbbox)
+  {
+    if (any (srcbbox.stride() != regbbox.stride() or
+             dstbbox.stride() != regbbox.stride()))
+    {
+#pragma omp critical
+      {
+        cout << "accumulate_3d.cc:" << endl
+             << "srcbbox=" << srcbbox << endl
+             << "dstbbox=" << dstbbox << endl
+             << "regbbox=" << regbbox << endl;
+        CCTK_WARN (0, "Internal error: strides disagree");
+      }
+    }
+    
+    if (any (srcbbox.stride() != dstbbox.stride())) {
+      CCTK_WARN (0, "Internal error: strides disagree");
+    }
+    
+    // This could be handled, but is likely to point to an error
+    // elsewhere
+    if (regbbox.empty()) {
+#pragma omp critical
+      CCTK_WARN (0, "Internal error: region extent is empty");
+    }
+    
+    if (not regbbox.is_contained_in(srcbbox) or
+        not regbbox.is_contained_in(dstbbox))
+    {
+#pragma omp critical
+      {
+        cout << "accumulate_3d.cc:" << endl
+             << "srcbbox=" << srcbbox << endl
+             << "dstbbox=" << dstbbox << endl
+             << "regbbox=" << regbbox << endl;
+        CCTK_WARN (0, "Internal error: region extent is not contained in array extent");
+      }
+    }
+    
+    if (any (srcext != srcbbox.shape() / srcbbox.stride() or
+             dstext != dstbbox.shape() / dstbbox.stride()))
+    {
+#pragma omp critical
+      CCTK_WARN (0, "Internal error: array sizes don't agree with bounding boxes");
+    }
+    
+    
+    
+    ivect3 const regext = regbbox.shape() / regbbox.stride();
+    assert (all ((regbbox.lower() - srcbbox.lower()) % srcbbox.stride() == 0));
+    ivect3 const srcoff = (regbbox.lower() - srcbbox.lower()) / srcbbox.stride();
+    assert (all ((regbbox.lower() - dstbbox.lower()) % dstbbox.stride() == 0));
+    ivect3 const dstoff = (regbbox.lower() - dstbbox.lower()) / dstbbox.stride();
+    
+    
+    
+    ptrdiff_t const srciext = srcext[0];
+    ptrdiff_t const srcjext = srcext[1];
+    ptrdiff_t const srckext = srcext[2];
+    
+    ptrdiff_t const dstiext = dstext[0];
+    ptrdiff_t const dstjext = dstext[1];
+    ptrdiff_t const dstkext = dstext[2];
+    
+    ptrdiff_t const regiext = regext[0];
+    ptrdiff_t const regjext = regext[1];
+    ptrdiff_t const regkext = regext[2];
+    
+    ptrdiff_t const srcioff = srcoff[0];
+    ptrdiff_t const srcjoff = srcoff[1];
+    ptrdiff_t const srckoff = srcoff[2];
+    
+    ptrdiff_t const dstioff = dstoff[0];
+    ptrdiff_t const dstjoff = dstoff[1];
+    ptrdiff_t const dstkoff = dstoff[2];
+    
+    
+    
+    // Loop over region
+    for (int k=0; k<regkext; ++k) {
+      for (int j=0; j<regjext; ++j) {
+        for (int i=0; i<regiext; ++i) {
+          
+          dst [DSTIND3(i, j, k)] += src [SRCIND3(i, j, k)];
+          
+        }
+      }
+    }
+    
+  }
+  
+  
+  
+#define TYPECASE(N,T)                                   \
+  template                                              \
+  void                                                  \
+  accumulate_3d (T const * restrict const src,          \
+                 ivect3 const & restrict srcext,        \
+                 T * restrict const dst,                \
+                 ivect3 const & restrict dstext,        \
+                 ibbox3 const & restrict srcbbox,       \
+                 ibbox3 const & restrict dstbbox,       \
+                 ibbox3 const & restrict regbbox);
+#include "typecase.hh"
+#undef TYPECASE
+  
+  
+  
+} // namespace CarpetLib