dynamic_at_c.hpp File Reference


Detailed Description

Constructs for static-to-dynamic integer convesion.

Author:
Lubomir Bourdev and Hailin Jin
Adobe Systems Incorporated
Date:
2005-2007
Last updated on May 4, 2006

#include "../../gil_config.hpp"
#include <cassert>
#include <stdexcept>
#include <boost/mpl/at.hpp>
#include <boost/mpl/size.hpp>

Go to the source code of this file.


Namespaces

namespace  boost
namespace  boost::gil
namespace  boost::gil::detail
namespace  boost::gil::detail::at_c

Defines

#define GIL_AT_C_VALUE(z, N, text)   mpl::at_c<IntTypes,S+N>::type::value,
#define GIL_DYNAMIC_AT_C_LIMIT   226
#define GIL_AT_C_LOOKUP(z, NUM, text)

Functions

template<typename IntTypes, typename ValueType>
ValueType at_c (std::size_t index)
 Given an MPL Random Access Sequence and a dynamic index n, returns the value of the n-th element It constructs a lookup table at compile time.

Define Documentation

#define GIL_AT_C_LOOKUP ( z,
NUM,
text   ) 

Value:

template<std::size_t S>                                             \
    struct at_c_fn<S,NUM> {                                             \
    template <typename IntTypes, typename ValueType> inline           \
        static ValueType apply(std::size_t index) {                    \
            static ValueType table[] = {                               \
                BOOST_PP_REPEAT(NUM, GIL_AT_C_VALUE, BOOST_PP_EMPTY)    \
            };                                                          \
            return table[index];                                        \
        }                                                               \
    };


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