[Boost-commit] svn:boost r82461 - trunk/boost/math/constants

Subject: [Boost-commit] svn:boost r82461 - trunk/boost/math/constants
From: john_at_[hidden]
Date: 2013-01-12 06:10:12

Author: johnmaddock
Date: 2013-01-12 06:10:11 EST (Sat, 12 Jan 2013)
New Revision: 82461
URL: http://svn.boost.org/trac/boost/changeset/82461

Log:
Enable caching of arbitrary precision constants.
Text files modified: 
   trunk/boost/math/constants/constants.hpp |     9 +++++++--                               
   1 files changed, 7 insertions(+), 2 deletions(-)

Modified: trunk/boost/math/constants/constants.hpp
==============================================================================
--- trunk/boost/math/constants/constants.hpp	(original)
+++ trunk/boost/math/constants/constants.hpp	2013-01-12 06:10:11 EST (Sat, 12 Jan 2013)
@@ -170,6 +170,11 @@
    }\
    /* This one is for very high precision that is none the less known at compile time: */ \
    template <int N> static T compute(BOOST_MATH_EXPLICIT_TEMPLATE_TYPE_SPEC(mpl::int_<N>));\
+   template <int N> static inline T get_from_compute(BOOST_MATH_EXPLICIT_TEMPLATE_TYPE_SPEC(mpl::int_<N>))\
+   {\
+      static const T result = compute<N>();\
+      return result;\
+   }\
    /* public getters come next */\
    public:\
    static inline T get(const mpl::int_<construct_from_string>&)\
@@ -185,8 +190,8 @@
    { return BOOST_JOIN(x, L); }\
    template <int N> static inline T get(const mpl::int_<N>& n)\
    {\
-      constant_initializer2<T, N, & BOOST_JOIN(constant_, name)<T>::template compute<N> >::force_instantiate();\
-      return compute<N>(); \
+      constant_initializer2<T, N, & BOOST_JOIN(constant_, name)<T>::template get_from_compute<N> >::force_instantiate();\
+      return get_from_compute<N>(); \
    }\
    /* This one is for true arbitary precision, which may well vary at runtime: */ \
    static inline T get(const mpl::int_<0>&)\