X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/863aeead864a309c494893a1b06ec33ed2b7daf1..d20f024dba9ff1e9c8822237caaf963b9e913889:/src/smpi/colls/coll_tuned_topo.cpp

diff --git a/src/smpi/colls/coll_tuned_topo.cpp b/src/smpi/colls/coll_tuned_topo.cpp
index aa797a9884..06a23b4019 100644
--- a/src/smpi/colls/coll_tuned_topo.cpp
+++ b/src/smpi/colls/coll_tuned_topo.cpp
@@ -19,8 +19,8 @@
  * Additional copyrights may follow
  */
 
-#include "colls_private.h"
-#include "coll_tuned_topo.h"
+#include "coll_tuned_topo.hpp"
+#include "colls_private.hpp"
 /*
  * Some static helpers.
  */
@@ -52,7 +52,10 @@ static int calculate_num_nodes_up_to_level( int fanout, int level )
 {
     /* just use geometric progression formula for sum:
        a^0+a^1+...a^(n-1) = (a^n-1)/(a-1) */
-    return ((pown(fanout,level) - 1)/(fanout - 1));
+  if(fanout > 1)  
+   return ((pown(fanout,level) - 1)/(fanout - 1));
+  else
+   return 0; // is this right ?
 }
 
 /*