From b51965dddbed68f23c5e8c169c23c794313ce5f6 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 28 Jun 2011 17:17:23 +0200
Subject: Add boost subset as an implementation detail

---
 .../boost/functional/hash/detail/hash_float.hpp    | 101 +++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 cutl/details/boost/functional/hash/detail/hash_float.hpp

(limited to 'cutl/details/boost/functional/hash/detail/hash_float.hpp')

diff --git a/cutl/details/boost/functional/hash/detail/hash_float.hpp b/cutl/details/boost/functional/hash/detail/hash_float.hpp
new file mode 100644
index 0000000..dafec9a
--- /dev/null
+++ b/cutl/details/boost/functional/hash/detail/hash_float.hpp
@@ -0,0 +1,101 @@
+
+// Copyright 2005-2009 Daniel James.
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#if !defined(BOOST_FUNCTIONAL_HASH_DETAIL_HASH_FLOAT_HEADER)
+#define BOOST_FUNCTIONAL_HASH_DETAIL_HASH_FLOAT_HEADER
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <cutl/details/boost/config.hpp>
+#include <cutl/details/boost/functional/hash/detail/float_functions.hpp>
+#include <cutl/details/boost/functional/hash/detail/limits.hpp>
+#include <cutl/details/boost/integer/static_log2.hpp>
+#include <cutl/details/boost/cstdint.hpp>
+#include <cutl/details/boost/assert.hpp>
+
+// Include hash implementation for the current platform.
+
+// Cygwn
+#if defined(__CYGWIN__)
+#  if defined(__i386__) || defined(_M_IX86)
+#    include <cutl/details/boost/functional/hash/detail/hash_float_x86.hpp>
+#  else
+#    include <cutl/details/boost/functional/hash/detail/hash_float_generic.hpp>
+#  endif
+#else
+#  include <cutl/details/boost/functional/hash/detail/hash_float_generic.hpp>
+#endif
+
+// Can we use fpclassify?
+
+// STLport
+#if defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)
+#define BOOST_HASH_USE_FPCLASSIFY 0
+
+// GNU libstdc++ 3
+#elif defined(__GLIBCPP__) || defined(__GLIBCXX__)
+#  if (defined(__USE_ISOC99) || defined(_GLIBCXX_USE_C99_MATH)) && \
+      !(defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__))
+#    define BOOST_HASH_USE_FPCLASSIFY 1
+#  else
+#    define BOOST_HASH_USE_FPCLASSIFY 0
+#  endif
+
+// Everything else
+#else
+#  define BOOST_HASH_USE_FPCLASSIFY 0
+#endif
+
+#if BOOST_HASH_USE_FPCLASSIFY
+
+#include <cutl/details/boost/config/no_tr1/cmath.hpp>
+
+namespace cutl_details_boost
+{
+    namespace hash_detail
+    {
+        template <class T>
+        inline std::size_t float_hash_value(T v)
+        {
+            using namespace std;
+            switch (fpclassify(v)) {
+            case FP_ZERO:
+                return 0;
+            case FP_INFINITE:
+                return (std::size_t)(v > 0 ? -1 : -2);
+            case FP_NAN:
+                return (std::size_t)(-3);
+            case FP_NORMAL:
+            case FP_SUBNORMAL:
+                return float_hash_impl(v);
+            default:
+                BOOST_ASSERT(0);
+                return 0;
+            }
+        }
+    }
+}
+
+#else // !BOOST_HASH_USE_FPCLASSIFY
+
+namespace cutl_details_boost
+{
+    namespace hash_detail
+    {
+        template <class T>
+        inline std::size_t float_hash_value(T v)
+        {
+            return v == 0 ? 0 : float_hash_impl(v);
+        }
+    }
+}
+
+#endif // BOOST_HASH_USE_FPCLASSIFY
+
+#undef BOOST_HASH_USE_FPCLASSIFY
+
+#endif
-- 
cgit v1.1