gomp-20050608-branch/libstdc++-v3/testsuite/18_support/numeric_limits/digits10.cc

   1 // { dg-options "-mieee" { target alpha*-*-* } }
   2 // { dg-options "-mieee" { target sh*-*-* } }
   3
   4 // 1999-08-23 bkoz
   5
   6 // Copyright (C) 1999, 2001, 2002, 2003, 2004 Free Software Foundation
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 2, or (at your option)
  12 // any later version.
  13
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING.  If not, write to the Free
  21 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  22 // USA.
  23
  24 // 18.2.1.1 template class numeric_limits
  25
  26 #include <limits>
  27 #include <limits.h>
  28 #include <float.h>
  29 #include <cwchar>
  30 #include <testsuite_hooks.h>
  31
  32 // libstdc++/5045
  33 bool test03()
  34 {
  35   bool test __attribute__((unused)) = true;
  36
  37   VERIFY( std::numeric_limits<bool>::digits10 == 0 );
  38   if (__CHAR_BIT__ == 8)
  39     {
  40       VERIFY( std::numeric_limits<signed char>::digits10 == 2 );
  41       VERIFY( std::numeric_limits<unsigned char>::digits10 == 2 );
  42     }
  43   if (__CHAR_BIT__ * sizeof(short) == 16)
  44     {
  45       VERIFY( std::numeric_limits<signed short>::digits10 == 4 );
  46       VERIFY( std::numeric_limits<unsigned short>::digits10 == 4 );
  47     }
  48   if (__CHAR_BIT__ * sizeof(int) == 32)
  49     {
  50       VERIFY( std::numeric_limits<signed int>::digits10 == 9 );
  51       VERIFY( std::numeric_limits<unsigned int>::digits10 == 9 );
  52     }
  53   if (__CHAR_BIT__ * sizeof(long long) == 64)
  54     {
  55       VERIFY( std::numeric_limits<signed long long>::digits10 == 18 );
  56       VERIFY( std::numeric_limits<unsigned long long>::digits10 == 19 );
  57     }
  58   return test;
  59 }
  60
  61 int main()
  62 {
  63   test03();
  64
  65   return 0;
  66 }