libstdc++-v3/testsuite/26_numerics/valarray/28277.cc

   1 // 2006-07-15  Paolo Carlini  <pcarlini@suse.de>
   2
   3 // Copyright (C) 2006, 2009 Free Software Foundation
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <valarray>
  21 #include <testsuite_hooks.h>
  22
  23 // libstdc++/28277
  24 void test01()
  25 {
  26   bool test __attribute__((unused)) = true;
  27
  28   const std::valarray<int> v1(1, 5000000);
  29
  30   const std::valarray<int> v2 = v1.shift(1);
  31   VERIFY( v2.size() == v1.size() );
  32   VERIFY( v2[v1.size() - 1] == 0 );
  33
  34   const std::valarray<int> v3 = v2.cshift(-1);
  35   VERIFY( v3.size() == v2.size() );
  36   VERIFY( v3[0] == 0 );
  37 }
  38
  39 int main()
  40 {
  41   test01();
  42   return 0;
  43 }