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Previous version of integral_constant broke on any number of compilers, should now be fixed.

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[SVN r21283]
This commit is contained in:
John Maddock
2003-12-16 11:14:17 +00:00
parent 2bce5b2c26
commit 0081a5017d
1 changed files with 15 additions and 7 deletions
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22
include/boost/type_traits/detail/bool_trait_def.hpp
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@@ -152,6 +152,7 @@ template< param > struct trait##_impl< sp1,sp2 > \
#ifndef BOOST_TT_INTEGRAL_CONSTANT
#define BOOST_TT_INTEGRAL_CONSTANT
#include <boost/mpl/integral_c.hpp>
//
// this is not a TR1 conforming integral_constant,
@@ -162,14 +163,21 @@ namespace boost{
template <class T, T val>
struct integral_constant
{
typedef T value_type;
typedef integral_constant<T, val> type;
BOOST_STATIC_CONSTANT(value_type, value = val);
};
: public mpl::integral_c<T,val> {};
BOOST_TT_AUX_BOOL_TRAIT_SPEC2(integral_constant, bool, true, true);
BOOST_TT_AUX_BOOL_TRAIT_SPEC2(integral_constant, bool, false, false);
template<> struct integral_constant< bool, true > \
BOOST_TT_AUX_BOOL_C_BASE(true) \
{ \
BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(true) \
BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(1,integral_constant,(bool)) \
};
template<> struct integral_constant< bool, false > \
BOOST_TT_AUX_BOOL_C_BASE(false) \
{ \
BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(false) \
BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(1,integral_constant,(bool)) \
};
typedef integral_constant<bool, true> true_type;
typedef integral_constant<bool, false> false_type;