From f3e6c4e96ac509eb5de045ec3d29833d975eb93a Mon Sep 17 00:00:00 2001
From: Daniel James <daniel@calamity.org.uk>
Date: Sun, 7 May 2006 17:52:38 +0000
Subject: [PATCH] Hash workarounds for Digital Mars.

[SVN r33958]
---
 .../functional/detail/float_functions.hpp     |  2 +-
 include/boost/functional/hash/hash.hpp        | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/include/boost/functional/detail/float_functions.hpp b/include/boost/functional/detail/float_functions.hpp
index c5fc94a..34b8251 100644
--- a/include/boost/functional/detail/float_functions.hpp
+++ b/include/boost/functional/detail/float_functions.hpp
@@ -25,7 +25,7 @@
 
 // STLport:
 #if defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)
-#  if defined(__GNUC__) && __GNUC__ < 3 && (defined(linux) || defined(__linux) || defined(__linux__))
+#  if (defined(__GNUC__) && __GNUC__ < 3 && (defined(linux) || defined(__linux) || defined(__linux__))) || defined(__DMC__)
 #    define BOOST_HASH_USE_C99_FLOAT_FUNCS
 #  elif defined(BOOST_MSVC) && BOOST_MSVC < 1300
 #    define BOOST_HASH_USE_C99_FLOAT_FUNCS
diff --git a/include/boost/functional/hash/hash.hpp b/include/boost/functional/hash/hash.hpp
index b278c9b..c7189c5 100644
--- a/include/boost/functional/hash/hash.hpp
+++ b/include/boost/functional/hash/hash.hpp
@@ -41,7 +41,11 @@ namespace boost
     std::size_t hash_value(long);
     std::size_t hash_value(unsigned long);
 
+#if !BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x847))
     template <class T> std::size_t hash_value(T* const&);
+#else
+    template <class T> std::size_t hash_value(T*);
+#endif
 
 #if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
     template< class T, unsigned N >
@@ -105,7 +109,11 @@ namespace boost
     }
 
     // Implementation by Alberto Barbati and Dave Harris.
+#if !BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x847))
     template <class T> std::size_t hash_value(T* const& v)
+#else
+    template <class T> std::size_t hash_value(T* v)
+#endif
     {
         std::size_t x = static_cast<std::size_t>(
            reinterpret_cast<std::ptrdiff_t>(v));
@@ -460,6 +468,17 @@ namespace boost
 #endif
     };
 
+#if BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x847))
+    template <class T, unsigned int n> struct hash<T[n]>
+        : std::unary_function<T[n], std::size_t>
+    {
+        std::size_t operator()(const T* val) const
+        {
+            return boost::hash_range(val, val+n);
+        }
+    };
+#endif
+
 #elif !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
 
     // On compilers without partial specialization, boost::hash<T>