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Borland fix

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[SVN r15360]
This commit is contained in:
Aleksey Gurtovoy
2002-09-16 04:10:29 +00:00
parent 72ca3d7d9f
commit a38297a6cc
1 changed files with 14 additions and 3 deletions
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17
include/boost/pending/ct_if.hpp
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@ -36,12 +36,23 @@ namespace boost {
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
template <int cond, class A, class B>
// agurt, 15/sep/02: in certain cases Borland has problems with
// choosing the right 'ct_if' specialization even though 'cond'
// _does_ equal '1'; the easiest way to fix it is to make first
// 'ct_if' non-type template parameter boolean.
#if !defined(__BORLANDC__)
template <bool cond, class A, class B>
struct ct_if { typedef ct_if_error type; };
template <class A, class B>
struct ct_if<1, A, B> { typedef A type; };
struct ct_if<true, A, B> { typedef A type; };
template <class A, class B>
struct ct_if<0, A, B> { typedef B type; };
struct ct_if<false, A, B> { typedef B type; };
#else
template <bool cond, class A, class B>
struct ct_if { typedef A type; };
template <class A, class B>
struct ct_if<false, A, B> { typedef B type; };
#endif
template <class cond, class A, class B>
struct ct_if_t { typedef ct_if_error type; };