[PPL-devel] [GIT] ppl/ppl(master): Documented precondition of method Bit_Matrix:: remove_trailing_columns().

[Enea Zaffanella]

Module: ppl/ppl
Branch: master
Commit: 97150b49891b3cd74963f0e4382da44e1f9abc81
URL:    http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=97150b49891b3cd74963f0e4382da44e1f9abc81

Author: Enea Zaffanella <zaffanella at cs.unipr.it>
Date:   Sun Oct 10 17:41:52 2010 +0200

Documented precondition of method Bit_Matrix::remove_trailing_columns().

---

 src/Bit_Matrix.defs.hh |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/src/Bit_Matrix.defs.hh b/src/Bit_Matrix.defs.hh
index 97191ce..a1ac21f 100644
--- a/src/Bit_Matrix.defs.hh
+++ b/src/Bit_Matrix.defs.hh
@@ -106,6 +106,11 @@ public:
   void remove_trailing_rows(dimension_type n);
 
   //! Removes the last \p n columns.
+  /*!
+    \pre
+    The last \p n columns of the matrix are all made of zeros.
+    If such an assumption is not met, the behavior is undefined.
+  */
   void remove_trailing_columns(dimension_type n);
 
   //! Resizes the matrix copying the old contents.