From e1b6234d1858c30404d5a2553d829730c50fef99 Mon Sep 17 00:00:00 2001
From: Erik Schnetter <schnetter@cct.lsu.edu>
Date: Wed, 25 Aug 2010 10:11:36 -0400
Subject: CarpetInter2: Return early when interpolating zero variables

---
 Carpet/CarpetInterp2/src/fasterp.cc | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'Carpet/CarpetInterp2')

diff --git a/Carpet/CarpetInterp2/src/fasterp.cc b/Carpet/CarpetInterp2/src/fasterp.cc
index c59330556..6f42fe2b3 100644
--- a/Carpet/CarpetInterp2/src/fasterp.cc
+++ b/Carpet/CarpetInterp2/src/fasterp.cc
@@ -1060,6 +1060,9 @@ namespace CarpetInterp2 {
     if (verbose) CCTK_VInfo (CCTK_THORNSTRING,
                              "Interpolating %d variables", int(nvars));
     assert (values.size() == nvars);
+    
+    if (nvars == 0) return;
+    
     for (size_t v=0; v<values.size(); ++v) {
       int const vi = varinds.AT(v);
       assert (vi >= 0 and vi <= CCTK_NumVars());
-- 
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