williamr@2: //  Boost config.hpp configuration header file  ------------------------------//
williamr@2: 
williamr@2: //  (C) Copyright John Maddock 2001 - 2003.
williamr@2: //  (C) Copyright Darin Adler 2001.
williamr@2: //  (C) Copyright Peter Dimov 2001.
williamr@2: //  (C) Copyright Bill Kempf 2002.
williamr@2: //  (C) Copyright Jens Maurer 2002.
williamr@2: //  (C) Copyright David Abrahams 2002 - 2003.
williamr@2: //  (C) Copyright Gennaro Prota 2003.
williamr@2: //  (C) Copyright Eric Friedman 2003.
williamr@2: //  Use, modification and distribution are subject to the
williamr@2: //  Boost Software License, Version 1.0. (See accompanying file
williamr@2: //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
williamr@2: 
williamr@2: //  See http://www.boost.org for most recent version.
williamr@2: 
williamr@2: //  Boost config.hpp policy and rationale documentation has been moved to
williamr@2: //  http://www.boost.org/libs/config
williamr@2: //
williamr@2: //  This file is intended to be stable, and relatively unchanging.
williamr@2: //  It should contain boilerplate code only - no compiler specific
williamr@2: //  code unless it is unavoidable - no changes unless unavoidable.
williamr@2: 
williamr@2: #ifndef BOOST_CONFIG_SUFFIX_HPP
williamr@2: #define BOOST_CONFIG_SUFFIX_HPP
williamr@2: 
williamr@2: //
williamr@2: // look for long long by looking for the appropriate macros in <limits.h>.
williamr@2: // Note that we use limits.h rather than climits for maximal portability,
williamr@2: // remember that since these just declare a bunch of macros, there should be
williamr@2: // no namespace issues from this.
williamr@2: //
williamr@2: #if !defined(BOOST_HAS_LONG_LONG)                                               \
williamr@2:    && !defined(BOOST_MSVC) && !defined(__BORLANDC__)
williamr@2: # include <limits.h>
williamr@2: # if (defined(ULLONG_MAX) || defined(ULONG_LONG_MAX) || defined(ULONGLONG_MAX))
williamr@2: #   define BOOST_HAS_LONG_LONG
williamr@2: # endif
williamr@2: #endif
williamr@2: 
williamr@2: // GCC 3.x will clean up all of those nasty macro definitions that
williamr@2: // BOOST_NO_CTYPE_FUNCTIONS is intended to help work around, so undefine
williamr@2: // it under GCC 3.x.
williamr@2: #if defined(__GNUC__) && (__GNUC__ >= 3) && defined(BOOST_NO_CTYPE_FUNCTIONS)
williamr@2: #  undef BOOST_NO_CTYPE_FUNCTIONS
williamr@2: #endif
williamr@2: 
williamr@2: 
williamr@2: //
williamr@2: // Assume any extensions are in namespace std:: unless stated otherwise:
williamr@2: //
williamr@2: #  ifndef BOOST_STD_EXTENSION_NAMESPACE
williamr@2: #    define BOOST_STD_EXTENSION_NAMESPACE std
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // If cv-qualified specializations are not allowed, then neither are cv-void ones:
williamr@2: //
williamr@2: #  if defined(BOOST_NO_CV_SPECIALIZATIONS) \
williamr@2:       && !defined(BOOST_NO_CV_VOID_SPECIALIZATIONS)
williamr@2: #     define BOOST_NO_CV_VOID_SPECIALIZATIONS
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // If there is no numeric_limits template, then it can't have any compile time
williamr@2: // constants either!
williamr@2: //
williamr@2: #  if defined(BOOST_NO_LIMITS) \
williamr@2:       && !defined(BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS)
williamr@2: #     define BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
williamr@2: #     define BOOST_NO_MS_INT64_NUMERIC_LIMITS
williamr@2: #     define BOOST_NO_LONG_LONG_NUMERIC_LIMITS
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // if there is no long long then there is no specialisation
williamr@2: // for numeric_limits<long long> either:
williamr@2: //
williamr@2: #if !defined(BOOST_HAS_LONG_LONG) && !defined(BOOST_NO_LONG_LONG_NUMERIC_LIMITS)
williamr@2: #  define BOOST_NO_LONG_LONG_NUMERIC_LIMITS
williamr@2: #endif
williamr@2: 
williamr@2: //
williamr@2: // if there is no __int64 then there is no specialisation
williamr@2: // for numeric_limits<__int64> either:
williamr@2: //
williamr@2: #if !defined(BOOST_HAS_MS_INT64) && !defined(BOOST_NO_MS_INT64_NUMERIC_LIMITS)
williamr@2: #  define BOOST_NO_MS_INT64_NUMERIC_LIMITS
williamr@2: #endif
williamr@2: 
williamr@2: //
williamr@2: // if member templates are supported then so is the
williamr@2: // VC6 subset of member templates:
williamr@2: //
williamr@2: #  if !defined(BOOST_NO_MEMBER_TEMPLATES) \
williamr@2:        && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
williamr@2: #     define BOOST_MSVC6_MEMBER_TEMPLATES
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // Without partial specialization, can't test for partial specialisation bugs:
williamr@2: //
williamr@2: #  if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
williamr@2:       && !defined(BOOST_BCB_PARTIAL_SPECIALIZATION_BUG)
williamr@2: #     define BOOST_BCB_PARTIAL_SPECIALIZATION_BUG
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // Without partial specialization, we can't have array-type partial specialisations:
williamr@2: //
williamr@2: #  if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
williamr@2:       && !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
williamr@2: #     define BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // Without partial specialization, std::iterator_traits can't work:
williamr@2: //
williamr@2: #  if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
williamr@2:       && !defined(BOOST_NO_STD_ITERATOR_TRAITS)
williamr@2: #     define BOOST_NO_STD_ITERATOR_TRAITS
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // Without member template support, we can't have template constructors
williamr@2: // in the standard library either:
williamr@2: //
williamr@2: #  if defined(BOOST_NO_MEMBER_TEMPLATES) \
williamr@2:       && !defined(BOOST_MSVC6_MEMBER_TEMPLATES) \
williamr@2:       && !defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)
williamr@2: #     define BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // Without member template support, we can't have a conforming
williamr@2: // std::allocator template either:
williamr@2: //
williamr@2: #  if defined(BOOST_NO_MEMBER_TEMPLATES) \
williamr@2:       && !defined(BOOST_MSVC6_MEMBER_TEMPLATES) \
williamr@2:       && !defined(BOOST_NO_STD_ALLOCATOR)
williamr@2: #     define BOOST_NO_STD_ALLOCATOR
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // without ADL support then using declarations will break ADL as well:
williamr@2: //
williamr@2: #if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP) && !defined(BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL)
williamr@2: #  define BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL
williamr@2: #endif
williamr@2: 
williamr@2: //
williamr@2: // If we have a standard allocator, then we have a partial one as well:
williamr@2: //
williamr@2: #if !defined(BOOST_NO_STD_ALLOCATOR)
williamr@2: #  define BOOST_HAS_PARTIAL_STD_ALLOCATOR
williamr@2: #endif
williamr@2: 
williamr@2: //
williamr@2: // We can't have a working std::use_facet if there is no std::locale:
williamr@2: //
williamr@2: #  if defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_USE_FACET)
williamr@2: #     define BOOST_NO_STD_USE_FACET
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // We can't have a std::messages facet if there is no std::locale:
williamr@2: //
williamr@2: #  if defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_MESSAGES)
williamr@2: #     define BOOST_NO_STD_MESSAGES
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // We can't have a working std::wstreambuf if there is no std::locale:
williamr@2: //
williamr@2: #  if defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_WSTREAMBUF)
williamr@2: #     define BOOST_NO_STD_WSTREAMBUF
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // We can't have a <cwctype> if there is no <cwchar>:
williamr@2: //
williamr@2: #  if defined(BOOST_NO_CWCHAR) && !defined(BOOST_NO_CWCTYPE)
williamr@2: #     define BOOST_NO_CWCTYPE
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // We can't have a swprintf if there is no <cwchar>:
williamr@2: //
williamr@2: #  if defined(BOOST_NO_CWCHAR) && !defined(BOOST_NO_SWPRINTF)
williamr@2: #     define BOOST_NO_SWPRINTF
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // If Win32 support is turned off, then we must turn off
williamr@2: // threading support also, unless there is some other
williamr@2: // thread API enabled:
williamr@2: //
williamr@2: #if defined(BOOST_DISABLE_WIN32) && defined(_WIN32) \
williamr@2:    && !defined(BOOST_DISABLE_THREADS) && !defined(BOOST_HAS_PTHREADS)
williamr@2: #  define BOOST_DISABLE_THREADS
williamr@2: #endif
williamr@2: 
williamr@2: //
williamr@2: // Turn on threading support if the compiler thinks that it's in
williamr@2: // multithreaded mode.  We put this here because there are only a
williamr@2: // limited number of macros that identify this (if there's any missing
williamr@2: // from here then add to the appropriate compiler section):
williamr@2: //
williamr@2: #if (defined(__MT__) || defined(_MT) || defined(_REENTRANT) \
williamr@2:     || defined(_PTHREADS)) && !defined(BOOST_HAS_THREADS)
williamr@2: #  define BOOST_HAS_THREADS
williamr@2: #endif
williamr@2: 
williamr@2: //
williamr@2: // Turn threading support off if BOOST_DISABLE_THREADS is defined:
williamr@2: //
williamr@2: #if defined(BOOST_DISABLE_THREADS) && defined(BOOST_HAS_THREADS)
williamr@2: #  undef BOOST_HAS_THREADS
williamr@2: #endif
williamr@2: 
williamr@2: //
williamr@2: // Turn threading support off if we don't recognise the threading API:
williamr@2: //
williamr@2: #if defined(BOOST_HAS_THREADS) && !defined(BOOST_HAS_PTHREADS)\
williamr@2:       && !defined(BOOST_HAS_WINTHREADS) && !defined(BOOST_HAS_BETHREADS)\
williamr@2:       && !defined(BOOST_HAS_MPTASKS)
williamr@2: #  undef BOOST_HAS_THREADS
williamr@2: #endif
williamr@2: 
williamr@2: //
williamr@2: // Turn threading detail macros off if we don't (want to) use threading
williamr@2: //
williamr@2: #ifndef BOOST_HAS_THREADS
williamr@2: #  undef BOOST_HAS_PTHREADS
williamr@2: #  undef BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE
williamr@2: #  undef BOOST_HAS_WINTHREADS
williamr@2: #  undef BOOST_HAS_BETHREADS
williamr@2: #  undef BOOST_HAS_MPTASKS
williamr@2: #endif
williamr@2: 
williamr@2: //
williamr@2: // If the compiler claims to be C99 conformant, then it had better
williamr@2: // have a <stdint.h>:
williamr@2: //
williamr@2: #  if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901)
williamr@2: #     define BOOST_HAS_STDINT_H
williamr@2: #     ifndef BOOST_HAS_LOG1P
williamr@2: #        define BOOST_HAS_LOG1P
williamr@2: #     endif
williamr@2: #     ifndef BOOST_HAS_EXPM1
williamr@2: #        define BOOST_HAS_EXPM1
williamr@2: #     endif
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // Define BOOST_NO_SLIST and BOOST_NO_HASH if required.
williamr@2: // Note that this is for backwards compatibility only.
williamr@2: //
williamr@2: #  ifndef BOOST_HAS_SLIST
williamr@2: #     define BOOST_NO_SLIST
williamr@2: #  endif
williamr@2: 
williamr@2: #  ifndef BOOST_HAS_HASH
williamr@2: #     define BOOST_NO_HASH
williamr@2: #  endif
williamr@2: 
williamr@2: //
williamr@2: // Set BOOST_SLIST_HEADER if not set already:
williamr@2: //
williamr@2: #if defined(BOOST_HAS_SLIST) && !defined(BOOST_SLIST_HEADER)
williamr@2: #  define BOOST_SLIST_HEADER <slist>
williamr@2: #endif
williamr@2: 
williamr@2: //
williamr@2: // Set BOOST_HASH_SET_HEADER if not set already:
williamr@2: //
williamr@2: #if defined(BOOST_HAS_HASH) && !defined(BOOST_HASH_SET_HEADER)
williamr@2: #  define BOOST_HASH_SET_HEADER <hash_set>
williamr@2: #endif
williamr@2: 
williamr@2: //
williamr@2: // Set BOOST_HASH_MAP_HEADER if not set already:
williamr@2: //
williamr@2: #if defined(BOOST_HAS_HASH) && !defined(BOOST_HASH_MAP_HEADER)
williamr@2: #  define BOOST_HASH_MAP_HEADER <hash_map>
williamr@2: #endif
williamr@2: 
williamr@2: //  BOOST_HAS_ABI_HEADERS
williamr@2: //  This macro gets set if we have headers that fix the ABI,
williamr@2: //  and prevent ODR violations when linking to external libraries:
williamr@2: #if defined(BOOST_ABI_PREFIX) && defined(BOOST_ABI_SUFFIX) && !defined(BOOST_HAS_ABI_HEADERS)
williamr@2: #  define BOOST_HAS_ABI_HEADERS
williamr@2: #endif
williamr@2: 
williamr@2: #if defined(BOOST_HAS_ABI_HEADERS) && defined(BOOST_DISABLE_ABI_HEADERS)
williamr@2: #  undef BOOST_HAS_ABI_HEADERS
williamr@2: #endif
williamr@2: 
williamr@2: //  BOOST_NO_STDC_NAMESPACE workaround  --------------------------------------//
williamr@2: //  Because std::size_t usage is so common, even in boost headers which do not
williamr@2: //  otherwise use the C library, the <cstddef> workaround is included here so
williamr@2: //  that ugly workaround code need not appear in many other boost headers.
williamr@2: //  NOTE WELL: This is a workaround for non-conforming compilers; <cstddef>
williamr@2: //  must still be #included in the usual places so that <cstddef> inclusion
williamr@2: //  works as expected with standard conforming compilers.  The resulting
williamr@2: //  double inclusion of <cstddef> is harmless.
williamr@2: 
williamr@2: # ifdef BOOST_NO_STDC_NAMESPACE
williamr@2: #   include <cstddef>
williamr@2:     namespace std { using ::ptrdiff_t; using ::size_t; }
williamr@2: # endif
williamr@2: 
williamr@2: //  Workaround for the unfortunate min/max macros defined by some platform headers
williamr@2: 
williamr@2: #define BOOST_PREVENT_MACRO_SUBSTITUTION
williamr@2: 
williamr@2: #ifndef BOOST_USING_STD_MIN
williamr@2: #  define BOOST_USING_STD_MIN() using std::min
williamr@2: #endif
williamr@2: 
williamr@2: #ifndef BOOST_USING_STD_MAX
williamr@2: #  define BOOST_USING_STD_MAX() using std::max
williamr@2: #endif
williamr@2: 
williamr@2: //  BOOST_NO_STD_MIN_MAX workaround  -----------------------------------------//
williamr@2: 
williamr@2: #  ifdef BOOST_NO_STD_MIN_MAX
williamr@2: 
williamr@2: namespace std {
williamr@2:   template <class _Tp>
williamr@2:   inline const _Tp& min BOOST_PREVENT_MACRO_SUBSTITUTION (const _Tp& __a, const _Tp& __b) {
williamr@2:     return __b < __a ? __b : __a;
williamr@2:   }
williamr@2:   template <class _Tp>
williamr@2:   inline const _Tp& max BOOST_PREVENT_MACRO_SUBSTITUTION (const _Tp& __a, const _Tp& __b) {
williamr@2:     return  __a < __b ? __b : __a;
williamr@2:   }
williamr@2: }
williamr@2: 
williamr@2: #  endif
williamr@2: 
williamr@2: // BOOST_STATIC_CONSTANT workaround --------------------------------------- //
williamr@2: // On compilers which don't allow in-class initialization of static integral
williamr@2: // constant members, we must use enums as a workaround if we want the constants
williamr@2: // to be available at compile-time. This macro gives us a convenient way to
williamr@2: // declare such constants.
williamr@2: 
williamr@2: #  ifdef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
williamr@2: #       define BOOST_STATIC_CONSTANT(type, assignment) enum { assignment }
williamr@2: #  else
williamr@2: #     define BOOST_STATIC_CONSTANT(type, assignment) static const type assignment
williamr@2: #  endif
williamr@2: 
williamr@2: // BOOST_USE_FACET / HAS_FACET workaround ----------------------------------//
williamr@2: // When the standard library does not have a conforming std::use_facet there
williamr@2: // are various workarounds available, but they differ from library to library.
williamr@2: // The same problem occurs with has_facet.
williamr@2: // These macros provide a consistent way to access a locale's facets.
williamr@2: // Usage:
williamr@2: //    replace
williamr@2: //       std::use_facet<Type>(loc);
williamr@2: //    with
williamr@2: //       BOOST_USE_FACET(Type, loc);
williamr@2: //    Note do not add a std:: prefix to the front of BOOST_USE_FACET!
williamr@2: //  Use for BOOST_HAS_FACET is analagous.
williamr@2: 
williamr@2: #if defined(BOOST_NO_STD_USE_FACET)
williamr@2: #  ifdef BOOST_HAS_TWO_ARG_USE_FACET
williamr@2: #     define BOOST_USE_FACET(Type, loc) std::use_facet(loc, static_cast<Type*>(0))
williamr@2: #     define BOOST_HAS_FACET(Type, loc) std::has_facet(loc, static_cast<Type*>(0))
williamr@2: #  elif defined(BOOST_HAS_MACRO_USE_FACET)
williamr@2: #     define BOOST_USE_FACET(Type, loc) std::_USE(loc, Type)
williamr@2: #     define BOOST_HAS_FACET(Type, loc) std::_HAS(loc, Type)
williamr@2: #  elif defined(BOOST_HAS_STLP_USE_FACET)
williamr@2: #     define BOOST_USE_FACET(Type, loc) (*std::_Use_facet<Type >(loc))
williamr@2: #     define BOOST_HAS_FACET(Type, loc) std::has_facet< Type >(loc)
williamr@2: #  endif
williamr@2: #else
williamr@2: #  define BOOST_USE_FACET(Type, loc) std::use_facet< Type >(loc)
williamr@2: #  define BOOST_HAS_FACET(Type, loc) std::has_facet< Type >(loc)
williamr@2: #endif
williamr@2: 
williamr@2: // BOOST_NESTED_TEMPLATE workaround ------------------------------------------//
williamr@2: // Member templates are supported by some compilers even though they can't use
williamr@2: // the A::template member<U> syntax, as a workaround replace:
williamr@2: //
williamr@2: // typedef typename A::template rebind<U> binder;
williamr@2: //
williamr@2: // with:
williamr@2: //
williamr@2: // typedef typename A::BOOST_NESTED_TEMPLATE rebind<U> binder;
williamr@2: 
williamr@2: #ifndef BOOST_NO_MEMBER_TEMPLATE_KEYWORD
williamr@2: #  define BOOST_NESTED_TEMPLATE template
williamr@2: #else
williamr@2: #  define BOOST_NESTED_TEMPLATE
williamr@2: #endif
williamr@2: 
williamr@2: // BOOST_UNREACHABLE_RETURN(x) workaround -------------------------------------//
williamr@2: // Normally evaluates to nothing, unless BOOST_NO_UNREACHABLE_RETURN_DETECTION
williamr@2: // is defined, in which case it evaluates to return x; Use when you have a return
williamr@2: // statement that can never be reached.
williamr@2: 
williamr@2: #ifdef BOOST_NO_UNREACHABLE_RETURN_DETECTION
williamr@2: #  define BOOST_UNREACHABLE_RETURN(x) return x;
williamr@2: #else
williamr@2: #  define BOOST_UNREACHABLE_RETURN(x)
williamr@2: #endif
williamr@2: 
williamr@2: // BOOST_DEDUCED_TYPENAME workaround ------------------------------------------//
williamr@2: //
williamr@2: // Some compilers don't support the use of `typename' for dependent
williamr@2: // types in deduced contexts, e.g.
williamr@2: //
williamr@2: //     template <class T> void f(T, typename T::type);
williamr@2: //                                  ^^^^^^^^
williamr@2: // Replace these declarations with:
williamr@2: //
williamr@2: //     template <class T> void f(T, BOOST_DEDUCED_TYPENAME T::type);
williamr@2: 
williamr@2: #ifndef BOOST_NO_DEDUCED_TYPENAME
williamr@2: #  define BOOST_DEDUCED_TYPENAME typename
williamr@2: #else
williamr@2: #  define BOOST_DEDUCED_TYPENAME
williamr@2: #endif
williamr@2: 
williamr@2: // long long workaround ------------------------------------------//
williamr@2: // On gcc (and maybe other compilers?) long long is alway supported
williamr@2: // but it's use may generate either warnings (with -ansi), or errors
williamr@2: // (with -pedantic -ansi) unless it's use is prefixed by __extension__
williamr@2: //
williamr@2: #if defined(BOOST_HAS_LONG_LONG)
williamr@2: namespace boost{
williamr@2: #  ifdef __GNUC__
williamr@2:    __extension__ typedef long long long_long_type;
williamr@2:    __extension__ typedef unsigned long long ulong_long_type;
williamr@2: #  else
williamr@2:    typedef long long long_long_type;
williamr@2:    typedef unsigned long long ulong_long_type;
williamr@2: #  endif
williamr@2: }
williamr@2: #endif
williamr@2: 
williamr@2: // BOOST_[APPEND_]EXPLICIT_TEMPLATE_[NON_]TYPE macros --------------------------//
williamr@2: //
williamr@2: // Some compilers have problems with function templates whose
williamr@2: // template parameters don't appear in the function parameter
williamr@2: // list (basically they just link one instantiation of the
williamr@2: // template in the final executable). These macros provide a
williamr@2: // uniform way to cope with the problem with no effects on the
williamr@2: // calling syntax.
williamr@2: 
williamr@2: // Example:
williamr@2: //
williamr@2: //  #include <iostream>
williamr@2: //  #include <ostream>
williamr@2: //  #include <typeinfo>
williamr@2: //
williamr@2: //  template <int n>
williamr@2: //  void f() { std::cout << n << ' '; }
williamr@2: //
williamr@2: //  template <typename T>
williamr@2: //  void g() { std::cout << typeid(T).name() << ' '; }
williamr@2: //
williamr@2: //  int main() {
williamr@2: //    f<1>();
williamr@2: //    f<2>();
williamr@2: //
williamr@2: //    g<int>();
williamr@2: //    g<double>();
williamr@2: //  }
williamr@2: //
williamr@2: // With VC++ 6.0 the output is:
williamr@2: //
williamr@2: //   2 2 double double
williamr@2: //
williamr@2: // To fix it, write
williamr@2: //
williamr@2: //   template <int n>
williamr@2: //   void f(BOOST_EXPLICIT_TEMPLATE_NON_TYPE(int, n)) { ... }
williamr@2: //
williamr@2: //   template <typename T>
williamr@2: //   void g(BOOST_EXPLICIT_TEMPLATE_TYPE(T)) { ... }
williamr@2: //
williamr@2: 
williamr@2: 
williamr@2: #if defined BOOST_NO_EXPLICIT_FUNCTION_TEMPLATE_ARGUMENTS
williamr@2: 
williamr@2: #  include "boost/type.hpp"
williamr@2: #  include "boost/non_type.hpp"
williamr@2: 
williamr@2: #  define BOOST_EXPLICIT_TEMPLATE_TYPE(t)         boost::type<t>* = 0
williamr@2: #  define BOOST_EXPLICIT_TEMPLATE_TYPE_SPEC(t)    boost::type<t>*
williamr@2: #  define BOOST_EXPLICIT_TEMPLATE_NON_TYPE(t, v)  boost::non_type<t, v>* = 0
williamr@2: #  define BOOST_EXPLICIT_TEMPLATE_NON_TYPE_SPEC(t, v)  boost::non_type<t, v>*
williamr@2: 
williamr@2: #  define BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(t)         \
williamr@2:              , BOOST_EXPLICIT_TEMPLATE_TYPE(t)
williamr@2: #  define BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE_SPEC(t)    \
williamr@2:              , BOOST_EXPLICIT_TEMPLATE_TYPE_SPEC(t)
williamr@2: #  define BOOST_APPEND_EXPLICIT_TEMPLATE_NON_TYPE(t, v)  \
williamr@2:              , BOOST_EXPLICIT_TEMPLATE_NON_TYPE(t, v)
williamr@2: #  define BOOST_APPEND_EXPLICIT_TEMPLATE_NON_TYPE_SPEC(t, v)  \
williamr@2:              , BOOST_EXPLICIT_TEMPLATE_NON_TYPE_SPEC(t, v)
williamr@2: 
williamr@2: #else
williamr@2: 
williamr@2: // no workaround needed: expand to nothing
williamr@2: 
williamr@2: #  define BOOST_EXPLICIT_TEMPLATE_TYPE(t)
williamr@2: #  define BOOST_EXPLICIT_TEMPLATE_TYPE_SPEC(t)
williamr@2: #  define BOOST_EXPLICIT_TEMPLATE_NON_TYPE(t, v)
williamr@2: #  define BOOST_EXPLICIT_TEMPLATE_NON_TYPE_SPEC(t, v)
williamr@2: 
williamr@2: #  define BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(t)
williamr@2: #  define BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE_SPEC(t)
williamr@2: #  define BOOST_APPEND_EXPLICIT_TEMPLATE_NON_TYPE(t, v)
williamr@2: #  define BOOST_APPEND_EXPLICIT_TEMPLATE_NON_TYPE_SPEC(t, v)
williamr@2: 
williamr@2: 
williamr@2: #endif // defined BOOST_NO_EXPLICIT_FUNCTION_TEMPLATE_ARGUMENTS
williamr@2: 
williamr@2: 
williamr@2: // ---------------------------------------------------------------------------//
williamr@2: 
williamr@2: //
williamr@2: // Helper macro BOOST_STRINGIZE:
williamr@2: // Converts the parameter X to a string after macro replacement
williamr@2: // on X has been performed.
williamr@2: //
williamr@2: #define BOOST_STRINGIZE(X) BOOST_DO_STRINGIZE(X)
williamr@2: #define BOOST_DO_STRINGIZE(X) #X
williamr@2: 
williamr@2: //
williamr@2: // Helper macro BOOST_JOIN:
williamr@2: // The following piece of macro magic joins the two
williamr@2: // arguments together, even when one of the arguments is
williamr@2: // itself a macro (see 16.3.1 in C++ standard).  The key
williamr@2: // is that macro expansion of macro arguments does not
williamr@2: // occur in BOOST_DO_JOIN2 but does in BOOST_DO_JOIN.
williamr@2: //
williamr@2: #define BOOST_JOIN( X, Y ) BOOST_DO_JOIN( X, Y )
williamr@2: #define BOOST_DO_JOIN( X, Y ) BOOST_DO_JOIN2(X,Y)
williamr@2: #define BOOST_DO_JOIN2( X, Y ) X##Y
williamr@2: 
williamr@2: //
williamr@2: // Set some default values for compiler/library/platform names.
williamr@2: // These are for debugging config setup only:
williamr@2: //
williamr@2: #  ifndef BOOST_COMPILER
williamr@2: #     define BOOST_COMPILER "Unknown ISO C++ Compiler"
williamr@2: #  endif
williamr@2: #  ifndef BOOST_STDLIB
williamr@2: #     define BOOST_STDLIB "Unknown ISO standard library"
williamr@2: #  endif
williamr@2: #  ifndef BOOST_PLATFORM
williamr@2: #     if defined(unix) || defined(__unix) || defined(_XOPEN_SOURCE) \
williamr@2:          || defined(_POSIX_SOURCE)
williamr@2: #        define BOOST_PLATFORM "Generic Unix"
williamr@2: #     else
williamr@2: #        define BOOST_PLATFORM "Unknown"
williamr@2: #     endif
williamr@2: #  endif
williamr@2: 
williamr@2: #endif
williamr@2: 
williamr@2: 
williamr@2: 
williamr@2: