[Boost-commit] svn:boost r73787 - sandbox/SOC/2011/checks/libs/checks/test

Subject: [Boost-commit] svn:boost r73787 - sandbox/SOC/2011/checks/libs/checks/test
From: pierre.talbot.6114_at_[hidden]
Date: 2011-08-15 15:15:13

Author: trademark
Date: 2011-08-15 15:15:13 EDT (Mon, 15 Aug 2011)
New Revision: 73787
URL: http://svn.boost.org/trac/boost/changeset/73787

Log:
A generic transposition function that returns the number of transpostions that failed.
Added:
   sandbox/SOC/2011/checks/libs/checks/test/transposition_test.hpp   (contents, props changed)

Added: sandbox/SOC/2011/checks/libs/checks/test/transposition_test.hpp
==============================================================================
--- (empty file)
+++ sandbox/SOC/2011/checks/libs/checks/test/transposition_test.hpp	2011-08-15 15:15:13 EDT (Mon, 15 Aug 2011)
@@ -0,0 +1,43 @@
+//! \file transposition_test.hpp
+
+// Copyright Pierre Talbot 2011.
+
+// Use, modification and distribution are subject to the
+// Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt
+// or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+#ifndef BOOST_CHECK_TEST_TRANSPOSITION_HPP
+#define BOOST_CHECK_TEST_TRANSPOSITION_HPP
+
+template <typename functor>
+unsigned int transposition( const functor &compute_checkdigit )
+{
+  unsigned int transposition_failures = 0 ;
+
+  std::string sequence = "00" ;
+  std::string transpose_seq = "00" ;
+
+  for(int i=0; i <= 9; ++i )
+  {
+    for(int j=0; j <= 9; ++j)
+    {
+      if(i != j)
+      {
+        sequence[0] = i | '0' ;
+        sequence[1] = j | '0' ;
+
+        transpose_seq[0] = sequence[1] ;
+        transpose_seq[1] = sequence[0] ;
+
+        if( compute_checkdigit( sequence ) ==
+            compute_checkdigit( transpose_seq) )
+            ++transposition_failures ;
+      }
+    }
+  }
+  return transposition_failures ;
+}
+
+#endif // BOOST_CHECK_TEST_TRANSPOSITION_HPP
\ No newline at end of file