From 710d73bed8af2877b1b29db5772084f4a04b6fda Mon Sep 17 00:00:00 2001
From: John Maddock <john@johnmaddock.co.uk>
Date: Thu, 3 Feb 2005 13:54:18 +0000
Subject: [PATCH] Fix for old and broken EDG compilers

[SVN r27055]
---
 include/boost/type_traits/is_signed.hpp   | 42 ++++++++++++++++++
 include/boost/type_traits/is_unsigned.hpp | 53 ++++++++++++++++++++---
 2 files changed, 90 insertions(+), 5 deletions(-)

diff --git a/include/boost/type_traits/is_signed.hpp b/include/boost/type_traits/is_signed.hpp
index 56522c4..bff6fee 100755
--- a/include/boost/type_traits/is_signed.hpp
+++ b/include/boost/type_traits/is_signed.hpp
@@ -21,6 +21,8 @@ namespace boost {
 
 namespace detail{
 
+#if (defined(__EDG_VERSION__) && __EDG_VERSION__ <= 238)
+
 template <class T>
 struct is_signed_helper
 {
@@ -64,6 +66,46 @@ struct is_signed_imp
 #endif
 };
 
+#else
+
+template <class T> struct is_signed_imp : public false_type{};
+template <> struct is_signed_imp<signed char> : public true_type{};
+template <> struct is_signed_imp<const signed char> : public true_type{};
+template <> struct is_signed_imp<volatile signed char> : public true_type{};
+template <> struct is_signed_imp<const volatile signed char> : public true_type{};
+template <> struct is_signed_imp<short> : public true_type{};
+template <> struct is_signed_imp<const short> : public true_type{};
+template <> struct is_signed_imp<volatile short> : public true_type{};
+template <> struct is_signed_imp<const volatile short> : public true_type{};
+template <> struct is_signed_imp<int> : public true_type{};
+template <> struct is_signed_imp<const int> : public true_type{};
+template <> struct is_signed_imp<volatile int> : public true_type{};
+template <> struct is_signed_imp<const volatile int> : public true_type{};
+template <> struct is_signed_imp<long> : public true_type{};
+template <> struct is_signed_imp<const long> : public true_type{};
+template <> struct is_signed_imp<volatile long> : public true_type{};
+template <> struct is_signed_imp<const volatile long> : public true_type{};
+#ifdef BOOST_HAS_LONG_LONG
+template <> struct is_signed_imp<long long> : public true_type{};
+template <> struct is_signed_imp<const long long> : public true_type{};
+template <> struct is_signed_imp<volatile long long> : public true_type{};
+template <> struct is_signed_imp<const volatile long long> : public true_type{};
+#endif
+#if defined(CHAR_MIN) && (CHAR_MIN != 0)
+template <> struct is_signed_imp<char> : public true_type{};
+template <> struct is_signed_imp<const char> : public true_type{};
+template <> struct is_signed_imp<volatile char> : public true_type{};
+template <> struct is_signed_imp<const volatile char> : public true_type{};
+#endif
+#if defined(WCHAR_MIN) && (WCHAR_MIN != 0)
+template <> struct is_signed_imp<wchar_t> : public true_type{};
+template <> struct is_signed_imp<const wchar_t> : public true_type{};
+template <> struct is_signed_imp<volatile wchar_t> : public true_type{};
+template <> struct is_signed_imp<const volatile wchar_t> : public true_type{};
+#endif
+
+#endif
+
 }
 
 BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_signed,T,::boost::detail::is_signed_imp<T>::value)
diff --git a/include/boost/type_traits/is_unsigned.hpp b/include/boost/type_traits/is_unsigned.hpp
index fd71611..68fb230 100755
--- a/include/boost/type_traits/is_unsigned.hpp
+++ b/include/boost/type_traits/is_unsigned.hpp
@@ -21,24 +21,26 @@ namespace boost {
 
 namespace detail{
 
+#if !(defined(__EDG_VERSION__) && __EDG_VERSION__ <= 238)
+
 template <class T>
-struct is_unsigned_helper
+struct is_ununsigned_helper
 {
    BOOST_STATIC_CONSTANT(bool, value = (static_cast<T>(-1) > 0));
 };
 
 template <bool integral_type>
-struct is_unsigned_select_helper
+struct is_ununsigned_select_helper
 {
    template <class T>
    struct rebind
    {
-      typedef is_unsigned_helper<T> type;
+      typedef is_ununsigned_helper<T> type;
    };
 };
 
 template <>
-struct is_unsigned_select_helper<false>
+struct is_ununsigned_select_helper<false>
 {
    template <class T>
    struct rebind
@@ -50,7 +52,7 @@ struct is_unsigned_select_helper<false>
 template <class T>
 struct is_unsigned_imp
 {
-   typedef is_unsigned_select_helper< 
+   typedef is_ununsigned_select_helper< 
       ::boost::type_traits::ice_or<
          ::boost::is_integral<T>::value,
          ::boost::is_enum<T>::value>::value 
@@ -60,6 +62,47 @@ struct is_unsigned_imp
    BOOST_STATIC_CONSTANT(bool, value = type::value);
 };
 
+#else
+
+template <class T> struct is_unsigned_imp : public false_type{};
+template <> struct is_unsigned_imp<unsigned char> : public true_type{};
+template <> struct is_unsigned_imp<const unsigned char> : public true_type{};
+template <> struct is_unsigned_imp<volatile unsigned char> : public true_type{};
+template <> struct is_unsigned_imp<const volatile unsigned char> : public true_type{};
+template <> struct is_unsigned_imp<unsigned short> : public true_type{};
+template <> struct is_unsigned_imp<const unsigned short> : public true_type{};
+template <> struct is_unsigned_imp<volatile unsigned short> : public true_type{};
+template <> struct is_unsigned_imp<const volatile unsigned short> : public true_type{};
+template <> struct is_unsigned_imp<unsigned int> : public true_type{};
+template <> struct is_unsigned_imp<const unsigned int> : public true_type{};
+template <> struct is_unsigned_imp<volatile unsigned int> : public true_type{};
+template <> struct is_unsigned_imp<const volatile unsigned int> : public true_type{};
+template <> struct is_unsigned_imp<unsigned long> : public true_type{};
+template <> struct is_unsigned_imp<const unsigned long> : public true_type{};
+template <> struct is_unsigned_imp<volatile unsigned long> : public true_type{};
+template <> struct is_unsigned_imp<const volatile unsigned long> : public true_type{};
+#ifdef BOOST_HAS_LONG_LONG
+template <> struct is_unsigned_imp<unsigned long long> : public true_type{};
+template <> struct is_unsigned_imp<const unsigned long long> : public true_type{};
+template <> struct is_unsigned_imp<volatile unsigned long long> : public true_type{};
+template <> struct is_unsigned_imp<const volatile unsigned long long> : public true_type{};
+#endif
+#if defined(CHAR_MIN) && (CHAR_MIN == 0)
+template <> struct is_unsigned_imp<char> : public true_type{};
+template <> struct is_unsigned_imp<const char> : public true_type{};
+template <> struct is_unsigned_imp<volatile char> : public true_type{};
+template <> struct is_unsigned_imp<const volatile char> : public true_type{};
+#endif
+#if defined(WCHAR_MIN) && (WCHAR_MIN == 0)
+template <> struct is_unsigned_imp<wchar_t> : public true_type{};
+template <> struct is_unsigned_imp<const wchar_t> : public true_type{};
+template <> struct is_unsigned_imp<volatile wchar_t> : public true_type{};
+template <> struct is_unsigned_imp<const volatile wchar_t> : public true_type{};
+#endif
+
+#endif
+
+
 }
 
 BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_unsigned,T,::boost::detail::is_unsigned_imp<T>::value)