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-rw-r--r--boost/functional/hash/detail/hash_float_generic.hpp91
1 files changed, 0 insertions, 91 deletions
diff --git a/boost/functional/hash/detail/hash_float_generic.hpp b/boost/functional/hash/detail/hash_float_generic.hpp
deleted file mode 100644
index 1278c2f626..0000000000
--- a/boost/functional/hash/detail/hash_float_generic.hpp
+++ /dev/null
@@ -1,91 +0,0 @@
-
-// 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)
-
-// A general purpose hash function for non-zero floating point values.
-
-#if !defined(BOOST_FUNCTIONAL_HASH_DETAIL_HASH_FLOAT_GENERIC_HEADER)
-#define BOOST_FUNCTIONAL_HASH_DETAIL_HASH_FLOAT_GENERIC_HEADER
-
-#include <boost/functional/hash/detail/float_functions.hpp>
-#include <boost/integer/static_log2.hpp>
-#include <boost/functional/hash/detail/limits.hpp>
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
-# pragma once
-#endif
-
-#if defined(BOOST_MSVC)
-#pragma warning(push)
-#if BOOST_MSVC >= 1400
-#pragma warning(disable:6294) // Ill-defined for-loop: initial condition does
- // not satisfy test. Loop body not executed
-#endif
-#endif
-
-namespace boost
-{
- namespace hash_detail
- {
- inline void hash_float_combine(std::size_t& seed, std::size_t value)
- {
- seed ^= value + (seed<<6) + (seed>>2);
- }
-
- template <class T>
- inline std::size_t float_hash_impl2(T v)
- {
- boost::hash_detail::call_frexp<T> frexp;
- boost::hash_detail::call_ldexp<T> ldexp;
-
- int exp = 0;
-
- v = frexp(v, &exp);
-
- // A postive value is easier to hash, so combine the
- // sign with the exponent and use the absolute value.
- if(v < 0) {
- v = -v;
- exp += limits<T>::max_exponent -
- limits<T>::min_exponent;
- }
-
- v = ldexp(v, limits<std::size_t>::digits);
- std::size_t seed = static_cast<std::size_t>(v);
- v -= static_cast<T>(seed);
-
- // ceiling(digits(T) * log2(radix(T))/ digits(size_t)) - 1;
- std::size_t const length
- = (limits<T>::digits *
- boost::static_log2<limits<T>::radix>::value
- + limits<std::size_t>::digits - 1)
- / limits<std::size_t>::digits;
-
- for(std::size_t i = 0; i != length; ++i)
- {
- v = ldexp(v, limits<std::size_t>::digits);
- std::size_t part = static_cast<std::size_t>(v);
- v -= static_cast<T>(part);
- hash_float_combine(seed, part);
- }
-
- hash_float_combine(seed, exp);
-
- return seed;
- }
-
- template <class T>
- inline std::size_t float_hash_impl(T v)
- {
- typedef BOOST_DEDUCED_TYPENAME select_hash_type<T>::type type;
- return float_hash_impl2(static_cast<type>(v));
- }
- }
-}
-
-#if defined(BOOST_MSVC)
-#pragma warning(pop)
-#endif
-
-#endif