ceph/src/boost/libs/multi_array/example/foreach_test.cpp

   1 // Copyright 2002 The Trustees of Indiana University.
   2
   3 // Use, modification and distribution is subject to the Boost Software
   4 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   5 // http://www.boost.org/LICENSE_1_0.txt)
   6
   7 //  Boost.MultiArray Library
   8 //  Authors: Ronald Garcia
   9 //           Jeremy Siek
  10 //           Andrew Lumsdaine
  11 //  See http://www.boost.org/libs/multi_array for documentation.
  12
  13 // foreach_test.cpp
  14 // Let's see if this stuff works
  15
  16 #include "boost/multi_array.hpp"
  17 #include "for_each.hpp"
  18 #include <algorithm>
  19
  20 struct times_five {
  21   double operator()(const int& val) { return val*5.0; }
  22 };
  23
  24
  25 int main() {
  26
  27   typedef boost::multi_array<double,2> array;
  28
  29   double data[] = {
  30     1.0, 2.0, 3.0,
  31     4.0, 5.0, 6.0,
  32     7.0, 8.0, 9.0
  33   };
  34   const int data_size=9;
  35
  36   array A(boost::extents[3][3]);
  37   A.assign(data,data+data_size);
  38
  39 #if 0
  40   std::copy(A.data(),A.data()+A.num_elements(),
  41             std::ostream_iterator<double>(std::cout,","));
  42
  43   std::cout << "\n";
  44 #endif
  45   for_each(A,times_five());
  46
  47 #if 0
  48   std::copy(A.data(),A.data()+A.num_elements(),
  49             std::ostream_iterator<double>(std::cout,","));
  50
  51   std::cout << "\n";
  52 #endif
  53   return 0;
  54 }