boost/cstdlib.hpp

   1 //  boost/cstdlib.hpp header  ------------------------------------------------//
   2
   3 //  Copyright Beman Dawes 2001.  Distributed under the Boost
   4 //  Software License, Version 1.0. (See accompanying file
   5 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6
   7 //  See http://www.boost.org/libs/utility/cstdlib.html for documentation.
   8
   9 //  Revision History
  10 //   26 Feb 01  Initial version (Beman Dawes)
  11
  12 #ifndef BOOST_CSTDLIB_HPP
  13 #define BOOST_CSTDLIB_HPP
  14
  15 #include <cstdlib>
  16
  17 namespace boost
  18 {
  19    //  The intent is to propose the following for addition to namespace std
  20    //  in the C++ Standard Library, and to then deprecate EXIT_SUCCESS and
  21    //  EXIT_FAILURE.  As an implementation detail, this header defines the
  22    //  new constants in terms of EXIT_SUCCESS and EXIT_FAILURE.  In a new
  23    //  standard, the constants would be implementation-defined, although it
  24    //  might be worthwhile to "suggest" (which a standard is allowed to do)
  25    //  values of 0 and 1 respectively.
  26
  27    //  Rationale for having multiple failure values: some environments may
  28    //  wish to distinguish between different classes of errors.
  29    //  Rationale for choice of values: programs often use values < 100 for
  30    //  their own error reporting.  Values > 255 are sometimes reserved for
  31    //  system detected errors.  200/201 were suggested to minimize conflict.
  32
  33    const int exit_success = EXIT_SUCCESS;  // implementation-defined value
  34    const int exit_failure = EXIT_FAILURE;  // implementation-defined value
  35    const int exit_exception_failure = 200; // otherwise uncaught exception
  36    const int exit_test_failure = 201;      // report_error or
  37                                            //  report_critical_error called.
  38 }
  39
  40 #endif
  41