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epoc32/include/stdapis/boost/mpl/negate.hpp
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:27:01 +0100
branchSymbian2
changeset 3 e1b950c65cb4
permissions -rw-r--r--
Attempt to represent the S^2->S^3 header reorganisation as a series of "hg rename" operations 
     1 

     2 #ifndef BOOST_MPL_NEGATE_HPP_INCLUDED

     3 #define BOOST_MPL_NEGATE_HPP_INCLUDED

     4 

     5 // Copyright Aleksey Gurtovoy 2000-2004

     6 //

     7 // Distributed under the Boost Software License, Version 1.0. 

     8 // (See accompanying file LICENSE_1_0.txt or copy at 

     9 // http://www.boost.org/LICENSE_1_0.txt)

    10 //

    11 // See http://www.boost.org/libs/mpl for documentation.

    12 

    13 // $Source: /cvsroot/boost/boost/boost/mpl/negate.hpp,v $

    14 // $Date: 2004/09/07 09:06:08 $

    15 // $Revision: 1.4 $

    16 

    17 #include <boost/mpl/integral_c.hpp>

    18 #include <boost/mpl/aux_/msvc_eti_base.hpp>

    19 #include <boost/mpl/aux_/na_spec.hpp>

    20 #include <boost/mpl/aux_/lambda_support.hpp>

    21 #include <boost/mpl/aux_/config/eti.hpp>

    22 #include <boost/mpl/aux_/config/integral.hpp>

    23 #include <boost/mpl/aux_/config/static_constant.hpp>

    24 

    25 namespace boost { namespace mpl {

    26 

    27 template< typename Tag > struct negate_impl;

    28 

    29 template< typename T > struct negate_tag

    30 {

    31     typedef typename T::tag type;

    32 };

    33 

    34 template<

    35       typename BOOST_MPL_AUX_NA_PARAM(N)

    36     >

    37 struct negate

    38 #if !defined(BOOST_MPL_CFG_MSVC_ETI_BUG)

    39     : negate_impl<

    40           typename negate_tag<N>::type

    41         >::template apply<N>::type

    42 #else

    43     : aux::msvc_eti_base< typename apply_wrap1<

    44           negate_impl< typename negate_tag<N>::type >

    45         , N

    46         >::type >::type

    47 #endif

    48 {

    49     BOOST_MPL_AUX_LAMBDA_SUPPORT(1, negate, (N))

    50 };

    51 

    52 BOOST_MPL_AUX_NA_SPEC(1, negate)

    53 

    54 

    55 #if defined(BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC)

    56 namespace aux {

    57 template< typename T, T n > struct negate_wknd

    58 {

    59     BOOST_STATIC_CONSTANT(T, value = -n);

    60     typedef integral_c<T,value> type;

    61 };

    62 }

    63 #endif

    64 

    65 template<>

    66 struct negate_impl<integral_c_tag>

    67 {

    68 #if defined(BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC)

    69     template< typename N > struct apply

    70         : aux::negate_wknd< typename N::value_type, N::value >

    71 #else

    72     template< typename N > struct apply

    73         : integral_c< typename N::value_type, (-N::value) >

    74 #endif    

    75     {

    76     };

    77 };

    78 

    79 }}

    80 

    81 #endif // BOOST_MPL_NEGATE_HPP_INCLUDED
test