Fix the 3 billions of simplices limit

Add some comment and documentation about the new limit (4 billions)
Rephrase third party library installation documentation


git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/3billions_simplices_fix@1420 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 95b20677e455b61578da74aabbd3764b4a27816d

1 files changed, 2 insertions, 2 deletions

diff --git a/src/Persistent_cohomology/test/betti_numbers_unit_test.cpp b/src/Persistent_cohomology/test/betti_numbers_unit_test.cpp
index a4e00b45..40221005 100644
--- a/src/Persistent_cohomology/test/betti_numbers_unit_test.cpp
+++ b/src/Persistent_cohomology/test/betti_numbers_unit_test.cpp
@@ -12,7 +12,7 @@
 #include "gudhi/Simplex_tree.h"
 #include "gudhi/Persistent_cohomology.h"
 
-struct MyOptions : Gudhi::Simplex_tree_options_full_featured {
+struct MiniSTOptions : Gudhi::Simplex_tree_options_full_featured {
   // Implicitly use 0 as filtration value for all simplices
   static const bool store_filtration = false;
   // The persistence algorithm needs this
@@ -21,7 +21,7 @@ struct MyOptions : Gudhi::Simplex_tree_options_full_featured {
   typedef short Vertex_handle;
 };
 
-using Mini_simplex_tree = Gudhi::Simplex_tree<MyOptions>;
+using Mini_simplex_tree = Gudhi::Simplex_tree<MiniSTOptions>;
 using Mini_st_persistence =
     Gudhi::persistent_cohomology::Persistent_cohomology<Mini_simplex_tree, Gudhi::persistent_cohomology::Field_Zp>;