numeric_op.hpp 8.7 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315

#if !defined(BOOST_PP_IS_ITERATING)

///// header body

// NO INCLUDE GUARDS, THE HEADER IS INTENDED FOR MULTIPLE INCLUSION!

// Copyright Aleksey Gurtovoy 2000-2004
//
// Distributed under the Boost Software License, Version 1.0. 
// (See accompanying file LICENSE_1_0.txt or copy at 
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/mpl for documentation.

// $Id: numeric_op.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
// $Revision: 49267 $

#if !defined(BOOST_MPL_PREPROCESSING_MODE)
#   include <boost/mpl/numeric_cast.hpp>
#   include <boost/mpl/apply_wrap.hpp>
#   include <boost/mpl/if.hpp>
#   include <boost/mpl/tag.hpp>
#   include <boost/mpl/aux_/numeric_cast_utils.hpp>
#   include <boost/mpl/aux_/na.hpp>
#   include <boost/mpl/aux_/na_spec.hpp>
#   include <boost/mpl/aux_/lambda_support.hpp>
#   include <boost/mpl/aux_/msvc_eti_base.hpp>
#   include <boost/mpl/aux_/value_wknd.hpp>
#   include <boost/mpl/aux_/config/eti.hpp>
#   include <boost/mpl/aux_/nttp_decl.hpp>
#endif

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

#if defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
    || defined(BOOST_MPL_PREPROCESSING_MODE)

#   include <boost/mpl/limits/arity.hpp>
#   include <boost/mpl/aux_/preprocessor/partial_spec_params.hpp>
#   include <boost/mpl/aux_/preprocessor/def_params_tail.hpp>
#   include <boost/mpl/aux_/preprocessor/repeat.hpp>
#   include <boost/mpl/aux_/preprocessor/ext_params.hpp>
#   include <boost/mpl/aux_/preprocessor/params.hpp>
#   include <boost/mpl/aux_/preprocessor/enum.hpp>
#   include <boost/mpl/aux_/preprocessor/add.hpp>
#   include <boost/mpl/aux_/preprocessor/sub.hpp>
#   include <boost/mpl/aux_/config/ctps.hpp>
#   include <boost/mpl/aux_/config/eti.hpp>
#   include <boost/mpl/aux_/config/msvc.hpp>
#   include <boost/mpl/aux_/config/workaround.hpp>

#   include <boost/preprocessor/dec.hpp>
#   include <boost/preprocessor/inc.hpp>
#   include <boost/preprocessor/iterate.hpp>
#   include <boost/preprocessor/cat.hpp>


#if !defined(AUX778076_OP_ARITY)
#   define AUX778076_OP_ARITY BOOST_MPL_LIMIT_METAFUNCTION_ARITY
#endif

#if !defined(AUX778076_OP_IMPL_NAME)
#   define AUX778076_OP_IMPL_NAME BOOST_PP_CAT(AUX778076_OP_PREFIX,_impl)
#endif

#if !defined(AUX778076_OP_TAG_NAME)
#   define AUX778076_OP_TAG_NAME BOOST_PP_CAT(AUX778076_OP_PREFIX,_tag)
#endif

namespace boost { namespace mpl {

template< 
      typename Tag1
    , typename Tag2
#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
    , BOOST_MPL_AUX_NTTP_DECL(int, tag1_) = BOOST_MPL_AUX_MSVC_VALUE_WKND(Tag1)::value 
    , BOOST_MPL_AUX_NTTP_DECL(int, tag2_) = BOOST_MPL_AUX_MSVC_VALUE_WKND(Tag2)::value 
    >
struct AUX778076_OP_IMPL_NAME
    : if_c<
          ( tag1_ > tag2_ )
#else
    >
struct AUX778076_OP_IMPL_NAME
    : if_c<
          ( BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag1)
              > BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag2)
            )
#endif
        , aux::cast2nd_impl< AUX778076_OP_IMPL_NAME<Tag1,Tag1>,Tag1,Tag2 >
        , aux::cast1st_impl< AUX778076_OP_IMPL_NAME<Tag2,Tag2>,Tag1,Tag2 >
        >::type
{
};

/// for Digital Mars C++/compilers with no CTPS/TTP support
template<> struct AUX778076_OP_IMPL_NAME<na,na>
{
    template< typename U1, typename U2 > struct apply 
    {
        typedef apply type;
        BOOST_STATIC_CONSTANT(int, value = 0);
    };
};

#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
template< typename Tag > struct AUX778076_OP_IMPL_NAME<na,Tag>
{
    template< typename U1, typename U2 > struct apply 
    {
        typedef apply type;
        BOOST_STATIC_CONSTANT(int, value = 0);
    };
};

template< typename Tag > struct AUX778076_OP_IMPL_NAME<Tag,na>
{
    template< typename U1, typename U2 > struct apply 
    {
        typedef apply type;
        BOOST_STATIC_CONSTANT(int, value = 0);
    };
};
#else
template<> struct AUX778076_OP_IMPL_NAME<na,integral_c_tag>
{
    template< typename U1, typename U2 > struct apply 
    {
        typedef apply type;
        BOOST_STATIC_CONSTANT(int, value = 0);
    };
};

template<> struct AUX778076_OP_IMPL_NAME<integral_c_tag,na>
{
    template< typename U1, typename U2 > struct apply 
    {
        typedef apply type;
        BOOST_STATIC_CONSTANT(int, value = 0);
    };
};
#endif


#if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
    && BOOST_WORKAROUND(BOOST_MSVC, >= 1300)
template< typename T > struct AUX778076_OP_TAG_NAME
    : tag<T,na>
{
};
#else
template< typename T > struct AUX778076_OP_TAG_NAME
{
    typedef typename T::tag type;
};
#endif


#if AUX778076_OP_ARITY != 2

#   if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)

#   define AUX778076_OP_RIGHT_OPERAND(unused, i, N) , BOOST_PP_CAT(N, BOOST_MPL_PP_ADD(i, 2))>
#   define AUX778076_OP_N_CALLS(i, N) \
    BOOST_MPL_PP_REPEAT( BOOST_PP_DEC(i), BOOST_MPL_PP_REPEAT_IDENTITY_FUNC, AUX778076_OP_NAME< ) \
    N1 BOOST_MPL_PP_REPEAT( BOOST_MPL_PP_SUB(i, 1), AUX778076_OP_RIGHT_OPERAND, N ) \
/**/

template<
      typename BOOST_MPL_AUX_NA_PARAM(N1)
    , typename BOOST_MPL_AUX_NA_PARAM(N2)
    BOOST_MPL_PP_DEF_PARAMS_TAIL(2, typename N, na)
    >
struct AUX778076_OP_NAME
    : AUX778076_OP_N_CALLS(AUX778076_OP_ARITY, N)
{
    BOOST_MPL_AUX_LAMBDA_SUPPORT(
          AUX778076_OP_ARITY
        , AUX778076_OP_NAME
        , ( BOOST_MPL_PP_PARAMS(AUX778076_OP_ARITY, N) )
        )
};

#define BOOST_PP_ITERATION_PARAMS_1 \
    (3,( BOOST_PP_DEC(AUX778076_OP_ARITY), 2, <boost/mpl/aux_/numeric_op.hpp> ))
#include BOOST_PP_ITERATE()

#   undef AUX778076_OP_N_CALLS
#   undef AUX778076_OP_RIGHT_OPERAND

#   else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION

/// forward declaration
template< 
      typename BOOST_MPL_AUX_NA_PARAM(N1)
    , typename BOOST_MPL_AUX_NA_PARAM(N2)
    >
struct BOOST_PP_CAT(AUX778076_OP_NAME,2);

template<
      typename BOOST_MPL_AUX_NA_PARAM(N1)
    , typename BOOST_MPL_AUX_NA_PARAM(N2)
    BOOST_MPL_PP_DEF_PARAMS_TAIL(2, typename N, na)
    >
struct AUX778076_OP_NAME
#if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
    : aux::msvc_eti_base< typename if_<
#else
    : if_<
#endif
          is_na<N3>
        , BOOST_PP_CAT(AUX778076_OP_NAME,2)<N1,N2>
        , AUX778076_OP_NAME<
              BOOST_PP_CAT(AUX778076_OP_NAME,2)<N1,N2>
            , BOOST_MPL_PP_EXT_PARAMS(3, BOOST_PP_INC(AUX778076_OP_ARITY), N)
            >
        >::type
#if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
    >
#endif
{
    BOOST_MPL_AUX_LAMBDA_SUPPORT(
          AUX778076_OP_ARITY
        , AUX778076_OP_NAME
        , ( BOOST_MPL_PP_PARAMS(AUX778076_OP_ARITY, N) )
        )
};

template< 
      typename N1
    , typename N2
    >
struct BOOST_PP_CAT(AUX778076_OP_NAME,2)

#endif

#else // AUX778076_OP_ARITY == 2

template< 
      typename BOOST_MPL_AUX_NA_PARAM(N1)
    , typename BOOST_MPL_AUX_NA_PARAM(N2)
    >
struct AUX778076_OP_NAME

#endif

#if !defined(BOOST_MPL_CFG_MSVC_ETI_BUG)
    : AUX778076_OP_IMPL_NAME<
          typename AUX778076_OP_TAG_NAME<N1>::type
        , typename AUX778076_OP_TAG_NAME<N2>::type
        >::template apply<N1,N2>::type
#else
    : aux::msvc_eti_base< typename apply_wrap2<
          AUX778076_OP_IMPL_NAME<
              typename AUX778076_OP_TAG_NAME<N1>::type
            , typename AUX778076_OP_TAG_NAME<N2>::type
            >
        , N1
        , N2
        >::type >::type
#endif
{
#if AUX778076_OP_ARITY != 2

#   if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
    BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(
          AUX778076_OP_ARITY
        , AUX778076_OP_NAME
        , ( BOOST_MPL_PP_PARTIAL_SPEC_PARAMS(2, N, na) )
        )
#   else
    BOOST_MPL_AUX_LAMBDA_SUPPORT(2, BOOST_PP_CAT(AUX778076_OP_NAME,2), (N1, N2))
#   endif

#else
    BOOST_MPL_AUX_LAMBDA_SUPPORT(2, AUX778076_OP_NAME, (N1, N2))
#endif
};

BOOST_MPL_AUX_NA_SPEC2(2, AUX778076_OP_ARITY, AUX778076_OP_NAME)

}}

#endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS

///// iteration, depth == 1

// For gcc 4.4 compatability, we must include the
// BOOST_PP_ITERATION_DEPTH test inside an #else clause.
#else // BOOST_PP_IS_ITERATING
#if BOOST_PP_ITERATION_DEPTH() == 1

#   define i_ BOOST_PP_FRAME_ITERATION(1)

template<
      BOOST_MPL_PP_PARAMS(i_, typename N)
    >
struct AUX778076_OP_NAME<BOOST_MPL_PP_PARTIAL_SPEC_PARAMS(i_, N, na)>
#if i_ != 2
    : AUX778076_OP_N_CALLS(i_, N)
{
    BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(
          AUX778076_OP_ARITY
        , AUX778076_OP_NAME
        , ( BOOST_MPL_PP_PARTIAL_SPEC_PARAMS(i_, N, na) )
        )
};
#endif

#   undef i_

#endif // BOOST_PP_ITERATION_DEPTH()
#endif // BOOST_PP_IS_ITERATING