libstdc++-v3/testsuite/27_io/basic_ostream/inserters_arithmetic/char/3.cc

   1 // 1999-11-15 Kevin Ediger  <kediger@licor.com>
   2 // test the floating point inserters (facet num_put)
   3
   4 // Copyright (C) 1999-2021 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <sstream>
  22 #include <limits>
  23 #include <testsuite_hooks.h>
  24
  25 template<typename T>
  26 void
  27 test03_check(T n)
  28 {
  29   using namespace std;
  30
  31   stringbuf strbuf;
  32   ostream o(&strbuf);
  33   const char *expect;
  34
  35   if (numeric_limits<T>::digits + 1 == 16)
  36     expect = "177777 ffff";
  37   else if (numeric_limits<T>::digits + 1 == 32)
  38     expect = "37777777777 ffffffff";
  39   else if (numeric_limits<T>::digits + 1 == 64)
  40     expect = "1777777777777777777777 ffffffffffffffff";
  41   else
  42     expect = "wow, you've got some big numbers here";
  43
  44   o << oct << n << ' ' << hex << n;
  45   VERIFY ( strbuf.str() == expect );
  46 }
  47
  48 void
  49 test03()
  50 {
  51   short s = -1;
  52   int i = -1;
  53   long l = -1;
  54
  55   test03_check (s);
  56   test03_check (i);
  57   test03_check (l);
  58 }
  59
  60 int
  61 main()
  62 {
  63   test03();
  64   return 0;
  65 }