41 lines
882 B
C++
41 lines
882 B
C++
/* No include guard - this file is safe to reuse */
|
|
|
|
#if defined(DXX_WANT_ARRAY) && !defined(DXX_INCLUDED_ARRAY)
|
|
#define DXX_INCLUDED_ARRAY
|
|
#ifdef DXX_HAVE_CXX_ARRAY
|
|
#include <array>
|
|
using std::array;
|
|
#endif
|
|
|
|
#ifdef DXX_HAVE_CXX_TR1_ARRAY
|
|
#include <tr1/array>
|
|
using std::tr1::array;
|
|
#endif
|
|
|
|
#ifdef DXX_HAVE_BOOST_ARRAY
|
|
#include <boost/array.hpp>
|
|
using boost::array;
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(DXX_WANT_LENGTHOF) && !defined(DXX_INCLUDED_LENGTHOF)
|
|
#define DXX_INCLUDED_LENGTHOF
|
|
#ifdef DXX_HAVE_CXX11_FUNCTION_AUTO
|
|
#include <cstddef>
|
|
|
|
#ifdef DXX_HAVE_CXX11_EXPLICIT_DELETE
|
|
template <typename T>
|
|
static void array_identity(T) = delete;
|
|
#endif
|
|
|
|
template <typename T, std::size_t N>
|
|
static auto array_identity(T (&t)[N]) -> T(&)[N] { return t; }
|
|
#define lengthof(A) (sizeof((array_identity)(A)) / sizeof((A)[0]))
|
|
|
|
#else
|
|
|
|
#define lengthof(A) (sizeof((A)) / sizeof((A)[0]))
|
|
|
|
#endif
|
|
#endif
|