diff DEPENDENCIES/generic/include/boost/pending/integer_log2.hpp @ 101:c530137014c0

Update Boost headers (1.58.0)

--- a/DEPENDENCIES/generic/include/boost/pending/integer_log2.hpp	Fri Sep 04 12:01:02 2015 +0100
+++ b/DEPENDENCIES/generic/include/boost/pending/integer_log2.hpp	Mon Sep 07 11:12:49 2015 +0100
@@ -1,112 +1,9 @@
-// -----------------------------------------------------------
-// integer_log2.hpp
-//
-//   Gives the integer part of the logarithm, in base 2, of a
-// given number. Behavior is undefined if the argument is <= 0.
-//
-//         Copyright (c) 2003-2004, 2008 Gennaro Prota
-//
-// 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)
-//
-// -----------------------------------------------------------
+#ifndef BOOST_PENDING_INTEGER_LOG2_HPP
+#define BOOST_PENDING_INTEGER_LOG2_HPP
 
-#ifndef BOOST_INTEGER_LOG2_HPP_GP_20030301
-#define BOOST_INTEGER_LOG2_HPP_GP_20030301
+// The header file at this path is deprecated;
+// use boost/integer/integer_log2.hpp instead.
 
-#include <assert.h>
-#ifdef __BORLANDC__
-#include <climits>
+#include <boost/integer/integer_log2.hpp>
+
 #endif
-#include "boost/limits.hpp"
-#include "boost/config.hpp"
-
-
-namespace boost {
- namespace detail {
-
-  template <typename T>
-  int integer_log2_impl(T x, int n) {
-
-      int result = 0;
-
-      while (x != 1) {
-
-          const T t = static_cast<T>(x >> n);
-          if (t) {
-              result += n;
-              x = t;
-          }
-          n /= 2;
-
-      }
-
-      return result;
-  }
-
-
-
-  // helper to find the maximum power of two
-  // less than p (more involved than necessary,
-  // to avoid PTS)
-  //
-  template <int p, int n>
-  struct max_pow2_less {
-
-      enum { c = 2*n < p };
-
-      BOOST_STATIC_CONSTANT(int, value =
-          c ? (max_pow2_less< c*p, 2*c*n>::value) : n);
-
-  };
-
-  template <>
-  struct max_pow2_less<0, 0> {
-
-      BOOST_STATIC_CONSTANT(int, value = 0);
-  };
-
-  // this template is here just for Borland :(
-  // we could simply rely on numeric_limits but sometimes
-  // Borland tries to use numeric_limits<const T>, because
-  // of its usual const-related problems in argument deduction
-  // - gps
-  template <typename T>
-  struct width {
-
-#ifdef __BORLANDC__
-      BOOST_STATIC_CONSTANT(int, value = sizeof(T) * CHAR_BIT);
-#else
-      BOOST_STATIC_CONSTANT(int, value = (std::numeric_limits<T>::digits));
-#endif
-
-  };
-
- } // detail
-
-
- // ---------
- // integer_log2
- // ---------------
- //
- template <typename T>
- int integer_log2(T x) {
-
-     assert(x > 0);
-
-     const int n = detail::max_pow2_less<
-                     detail::width<T> :: value, 4
-                   > :: value;
-
-     return detail::integer_log2_impl(x, n);
-
- }
-
-
-
-}
-
-
-
-#endif // include guard