CarpetLib: Disable check for time extrapolation for op_copy grid functions

Disable the check for time extrapolation for grid functions that are
not interpolated but copied (transport_operator=op_copy).  This check
needs to know the sign of delta_time, and that sign is not known here.
(For example, 3-timelevel-initialisation evolves both forwards and
backwards in time.)

darcs-hash:20050726111122-891bb-0c2130f2dfdd86c25575cbb88cb7c8ad80089eac.gz

1 files changed, 19 insertions, 6 deletions

diff --git a/Carpet/CarpetLib/src/data.cc b/Carpet/CarpetLib/src/data.cc
index 025b677a0..83761be2b 100644
--- a/Carpet/CarpetLib/src/data.cc
+++ b/Carpet/CarpetLib/src/data.cc
@@ -1581,14 +1581,27 @@ void data<CCTK_REAL8>
           << "  times=" << times;
       CCTK_WARN (0, buf.str().c_str());
     }
+#if 0
+    // We cannot check because we do not know delta_time
   } else {
-    if (time > max_time + eps) {
-      ostringstream buf;
-      buf << "Internal error: extrapolation into the future."
-          << "  time=" << time
-          << "  times=" << times;
-      CCTK_WARN (0, buf.str().c_str());
+    if (delta_time > 0) {
+      if (time > max_time + eps) {
+        ostringstream buf;
+        buf << "Internal error: extrapolation into the future."
+            << "  time=" << time
+            << "  times=" << times;
+        CCTK_WARN (0, buf.str().c_str());
+      }
+    } else {
+      if (time < min_time - eps) {
+        ostringstream buf;
+        buf << "Internal error: extrapolation into the past."
+            << "  time=" << time
+            << "  times=" << times;
+        CCTK_WARN (0, buf.str().c_str());
+      }
     }
+#endif
   }
 }