Subject: [Boost-commit] svn:boost r73268 - in branches/release/boost: . algorithm/string archive bimap config date_time date_time/posix_time detail dynamic_bitset filesystem function functional fusion fusion/container/list/detail geometry geometry/algorithms geometry/arithmetic geometry/core geometry/domains geometry/geometries geometry/iterators geometry/multi geometry/policies geometry/strategies geometry/util geometry/views gil graph icl integer interprocess intrusive io iostreams iterator math msm msm/back msm/front msm/front/detail msm/front/euml numeric/ublas pool program_options program_options/detail property_tree python random/detail range regex serialization signals signals2 spirit spirit/home spirit/home/karma spirit/home/support statechart system thread tr1 type_traits typeof unordered utility uuid variant wave xpressive
From: dnljms_at_[hidden]
Date: 2011-07-21 03:49:59
Author: danieljames
Date: 2011-07-21 03:49:59 EDT (Thu, 21 Jul 2011)
New Revision: 73268
URL: http://svn.boost.org/trac/boost/changeset/73268
Log:
Random: Merge constexpr integer_log2_impl.
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Text files modified:
branches/release/boost/random/detail/integer_log2.hpp | 11 +++++------
1 files changed, 5 insertions(+), 6 deletions(-)
Modified: branches/release/boost/random/detail/integer_log2.hpp
==============================================================================
--- branches/release/boost/random/detail/integer_log2.hpp (original)
+++ branches/release/boost/random/detail/integer_log2.hpp 2011-07-21 03:49:59 EDT (Thu, 21 Jul 2011)
@@ -22,9 +22,7 @@
namespace random {
namespace detail {
-// Daniel James: Disabled use of constexpr because integer_log2_impl is not a
-// valid constexpr.
-#if 0 && !defined(BOOST_NO_CONSTEXPR)
+#if !defined(BOOST_NO_CONSTEXPR)
#define BOOST_RANDOM_DETAIL_CONSTEXPR constexpr
#elif defined(BOOST_MSVC)
#define BOOST_RANDOM_DETAIL_CONSTEXPR __forceinline
@@ -38,10 +36,11 @@
struct integer_log2_impl
{
template<class T>
- BOOST_RANDOM_DETAIL_CONSTEXPR static int apply(T t, int accum)
+ BOOST_RANDOM_DETAIL_CONSTEXPR static int apply(T t, int accum,
+ int update = 0)
{
- int update = ((t >> Shift) != 0) * Shift;
- return integer_log2_impl<Shift / 2>::apply(t >> update, accum + update);
+ return update = ((t >> Shift) != 0) * Shift,
+ integer_log2_impl<Shift / 2>::apply(t >> update, accum + update);
}
};