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The Windows Access Control Model: Part 2

, 27 Jun 2005 CPOL
This second part of the Access Control series will program with the basic Access Control structures.
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//  (C) Copyright Boost.org 1999. Permission to copy, use, modify, sell and
//  distribute this software is granted provided this copyright notice appears
//  in all copies. This software is provided "as is" without express or implied
//  warranty, and with no claim as to its suitability for any purpose.
//
// use this header as a workaround for missing <limits>

//  See http://www.boost.org/libs/utility/limits.html for documentation.

#ifndef BOOST_LIMITS
#define BOOST_LIMITS

#include <boost/config.hpp>

#ifdef BOOST_NO_LIMITS
# include <boost/detail/limits.hpp>
#else
# include <limits>
#endif

#if (defined(BOOST_HAS_LONG_LONG) && defined(BOOST_NO_LONG_LONG_NUMERIC_LIMITS)) \
      || (defined(BOOST_HAS_MS_INT64) && defined(BOOST_NO_MS_INT64_NUMERIC_LIMITS))
// Add missing specializations for numeric_limits:
#ifdef BOOST_HAS_MS_INT64
#  define BOOST_LLT __int64
#else
#  define BOOST_LLT long long
#endif

namespace std
{
  template<>
  class numeric_limits<BOOST_LLT> 
  {
   public:

      BOOST_STATIC_CONSTANT(bool, is_specialized = true);
#ifdef BOOST_HAS_MS_INT64
      static BOOST_LLT min(){ return 0x8000000000000000i64; }
      static BOOST_LLT max(){ return 0x7FFFFFFFFFFFFFFFi64; }
#elif defined(LLONG_MAX)
      static BOOST_LLT min(){ return LLONG_MIN; }
      static BOOST_LLT max(){ return LLONG_MAX; }
#elif defined(LONGLONG_MAX)
      static BOOST_LLT min(){ return LONGLONG_MIN; }
      static BOOST_LLT max(){ return LONGLONG_MAX; }
#else
      static BOOST_LLT min(){ return 1LL << (sizeof(BOOST_LLT) * CHAR_BIT - 1); }
      static BOOST_LLT max(){ return ~min(); }
#endif
      BOOST_STATIC_CONSTANT(int, digits = sizeof(BOOST_LLT) * CHAR_BIT -1);
      BOOST_STATIC_CONSTANT(int, digits10 = (CHAR_BIT * sizeof (BOOST_LLT) - 1) * 301L / 1000);
      BOOST_STATIC_CONSTANT(bool, is_signed = true);
      BOOST_STATIC_CONSTANT(bool, is_integer = true);
      BOOST_STATIC_CONSTANT(bool, is_exact = true);
      BOOST_STATIC_CONSTANT(int, radix = 2);
      static BOOST_LLT epsilon() throw() { return 0; };
      static BOOST_LLT round_error() throw() { return 0; };

      BOOST_STATIC_CONSTANT(int, min_exponent = 0);
      BOOST_STATIC_CONSTANT(int, min_exponent10 = 0);
      BOOST_STATIC_CONSTANT(int, max_exponent = 0);
      BOOST_STATIC_CONSTANT(int, max_exponent10 = 0);

      BOOST_STATIC_CONSTANT(bool, has_infinity = false);
      BOOST_STATIC_CONSTANT(bool, has_quiet_NaN = false);
      BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false);
      BOOST_STATIC_CONSTANT(bool, has_denorm = false);
      BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false);
      static BOOST_LLT infinity() throw() { return 0; };
      static BOOST_LLT quiet_NaN() throw() { return 0; };
      static BOOST_LLT signaling_NaN() throw() { return 0; };
      static BOOST_LLT denorm_min() throw() { return 0; };

      BOOST_STATIC_CONSTANT(bool, is_iec559 = false);
      BOOST_STATIC_CONSTANT(bool, is_bounded = false);
      BOOST_STATIC_CONSTANT(bool, is_modulo = false);

      BOOST_STATIC_CONSTANT(bool, traps = false);
      BOOST_STATIC_CONSTANT(bool, tinyness_before = false);
      BOOST_STATIC_CONSTANT(float_round_style, round_style = round_toward_zero);
      
  };

  template<>
  class numeric_limits<unsigned BOOST_LLT> 
  {
   public:

      BOOST_STATIC_CONSTANT(bool, is_specialized = true);
#ifdef BOOST_HAS_MS_INT64
      static unsigned BOOST_LLT min(){ return 0ui64; }
      static unsigned BOOST_LLT max(){ return 0xFFFFFFFFFFFFFFFFui64; }
#elif defined(ULLONG_MAX) && defined(ULLONG_MIN)
      static unsigned BOOST_LLT min(){ return ULLONG_MIN; }
      static unsigned BOOST_LLT max(){ return ULLONG_MAX; }
#elif defined(ULONGLONG_MAX) && defined(ULONGLONG_MIN)
      static unsigned BOOST_LLT min(){ return ULONGLONG_MIN; }
      static unsigned BOOST_LLT max(){ return ULONGLONG_MAX; }
#else
      static unsigned BOOST_LLT min(){ return 0uLL; }
      static unsigned BOOST_LLT max(){ return ~0uLL; }
#endif
      BOOST_STATIC_CONSTANT(int, digits = sizeof(BOOST_LLT) * CHAR_BIT);
      BOOST_STATIC_CONSTANT(int, digits10 = (CHAR_BIT * sizeof (BOOST_LLT)) * 301L / 1000);
      BOOST_STATIC_CONSTANT(bool, is_signed = false);
      BOOST_STATIC_CONSTANT(bool, is_integer = true);
      BOOST_STATIC_CONSTANT(bool, is_exact = true);
      BOOST_STATIC_CONSTANT(int, radix = 2);
      static unsigned BOOST_LLT epsilon() throw() { return 0; };
      static unsigned BOOST_LLT round_error() throw() { return 0; };

      BOOST_STATIC_CONSTANT(int, min_exponent = 0);
      BOOST_STATIC_CONSTANT(int, min_exponent10 = 0);
      BOOST_STATIC_CONSTANT(int, max_exponent = 0);
      BOOST_STATIC_CONSTANT(int, max_exponent10 = 0);

      BOOST_STATIC_CONSTANT(bool, has_infinity = false);
      BOOST_STATIC_CONSTANT(bool, has_quiet_NaN = false);
      BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false);
      BOOST_STATIC_CONSTANT(bool, has_denorm = false);
      BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false);
      static unsigned BOOST_LLT infinity() throw() { return 0; };
      static unsigned BOOST_LLT quiet_NaN() throw() { return 0; };
      static unsigned BOOST_LLT signaling_NaN() throw() { return 0; };
      static unsigned BOOST_LLT denorm_min() throw() { return 0; };

      BOOST_STATIC_CONSTANT(bool, is_iec559 = false);
      BOOST_STATIC_CONSTANT(bool, is_bounded = false);
      BOOST_STATIC_CONSTANT(bool, is_modulo = false);

      BOOST_STATIC_CONSTANT(bool, traps = false);
      BOOST_STATIC_CONSTANT(bool, tinyness_before = false);
      BOOST_STATIC_CONSTANT(float_round_style, round_style = round_toward_zero);
      
  };
}
#endif 

#endif

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

oshah
Web Developer
United States United States
Mr. Shah is a reclusive C++/C# developer lurking somewhere in the depths of the city of London. He learnt physics at Kings' College London and obtained a Master in Science there. Having earned an MCAD, he teeters on the brink of transitioning from C++ to C#, unsure of which language to jump to. Fortunately, he also knows how to use .NET interop to merge code between the two languages (which means he won't have to make the choice anytime soon).
 
His interests (apart from programming) are walking, football (the real one!), philosophy, history, retro-gaming, strategy gaming, and any good game in general.
 
He maintains a website / blog / FAQ / junk at shexec32.serveftp.net, where he places the best answers he's written to the questions you've asked. If you can find him, maybe you can hire Mr. Shah to help you with anything C++[/CLI]/C#/.NET related Smile | :) .

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