old-autovect-branch/libstdc++-v3/testsuite/27_io/types/3.cc

   1 // Copyright (C) 2003
   2 // Free Software Foundation, Inc.
   3 //
   4 // This file is part of the GNU ISO C++ Library.  This library is free
   5 // software; you can redistribute it and/or modify it under the
   6 // terms of the GNU General Public License as published by the
   7 // Free Software Foundation; either version 2, or (at your option)
   8 // any later version.
   9
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License along
  16 // with this library; see the file COPYING.  If not, write to the Free
  17 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  18 // USA.
  19
  20 // 27.4.3  streamoff
  21
  22 #include <ios>
  23 #include <limits>
  24 #include <testsuite_hooks.h>
  25
  26 void check(std::streamsize n)
  27 {
  28   bool test __attribute__((unused)) = true;
  29
  30   VERIFY( std::streamsize(std::streamoff(n)) == n );
  31 }
  32
  33 void test03()
  34 {
  35   check(0);
  36   check(-1);
  37   check(1);
  38   check(std::numeric_limits<std::streamsize>::min());
  39   check(std::numeric_limits<std::streamsize>::min() + 1);
  40   check(std::numeric_limits<std::streamsize>::min() / 2);
  41   check(std::numeric_limits<std::streamsize>::max());
  42   check(std::numeric_limits<std::streamsize>::max() - 1);
  43   check(std::numeric_limits<std::streamsize>::max() / 2);
  44 }
  45
  46 int main()
  47 {
  48   test03();
  49   return 0;
  50 }