libstdc++-v3/testsuite/22_locale/num_get/get/char/10.cc

   1 // 2003-12-19  Paolo Carlini  <pcarlini@suse.de>
   2
   3 // Copyright (C) 2003-2016 Free Software Foundation, Inc.
   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 // 22.2.2.1.1  num_get members
  21
  22 #include <locale>
  23 #include <sstream>
  24 #include <testsuite_hooks.h>
  25
  26 void test01()
  27 {
  28   using namespace std;
  29   typedef istreambuf_iterator<char> iterator_type;
  30
  31   bool test __attribute__((unused)) = true;
  32
  33   istringstream iss;
  34   const num_get<char>& ng = use_facet<num_get<char> >(iss.getloc());
  35   ios_base::iostate err = ios_base::goodbit;
  36   iterator_type end;
  37   float f = 1.0f;
  38   double d = 1.0;
  39   long double ld = 1.0l;
  40
  41   iss.str("1e.");
  42   err = ios_base::goodbit;
  43   end = ng.get(iss.rdbuf(), 0, iss, err, f);
  44   VERIFY( err == ios_base::failbit );
  45   VERIFY( *end == '.' );
  46   VERIFY( f == 0.0f );
  47
  48   iss.str("3e+");
  49   iss.clear();
  50   err = ios_base::goodbit;
  51   end = ng.get(iss.rdbuf(), 0, iss, err, d);
  52   VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
  53   VERIFY( d == 0.0 );
  54
  55   iss.str("6e ");
  56   iss.clear();
  57   err = ios_base::goodbit;
  58   end = ng.get(iss.rdbuf(), 0, iss, err, ld);
  59   VERIFY( *end == ' ' );
  60
  61   // libstdc++/37624.  We can't always obtain the required behavior
  62   // when sscanf is involved, because of, e.g., glibc/1765.
  63 #if defined(_GLIBCXX_HAVE_STRTOLD) && !defined(_GLIBCXX_HAVE_BROKEN_STRTOLD)
  64   VERIFY( err == ios_base::failbit );
  65   VERIFY( ld == 0.0l );
  66 #endif
  67 }
  68
  69 int main()
  70 {
  71   test01();
  72   return 0;
  73 }