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use BOOST_STATIC_CONSTANT

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define static member constants
add wchar_t specialization


[SVN r9997]
This commit is contained in:
Jens Maurer
2001-04-30 13:36:05 +00:00
parent b519841b7f
commit 33abcf7250
1 changed files with 25 additions and 18 deletions
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41
include/boost/integer_traits.hpp
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@ -21,8 +21,11 @@
#include <boost/config.hpp>
#include <boost/limits.hpp>
// This is an implementation detail and not part of the interface
// These are an implementation detail and not part of the interface
#include <limits.h>
#ifndef BOOST_NO_INTRINSIC_WCHAR_T
#include <wchar.h>
#endif
namespace boost {
@ -30,11 +33,7 @@ template<class T>
class integer_traits : public std::numeric_limits<T>
{
public:
#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
static const bool is_integral = false;
#else
enum { is_integral = false };
#endif
BOOST_STATIC_CONSTANT(bool, is_integral = false);
};
namespace detail {
@ -42,18 +41,20 @@ template<class T, T min_val, T max_val>
class integer_traits_base
{
public:
BOOST_STATIC_CONSTANT(bool, is_integral = true);
BOOST_STATIC_CONSTANT(T, const_min = min_val);
BOOST_STATIC_CONSTANT(T, const_max = max_val);
};
#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
static const bool is_integral = true;
static const T const_min = min_val;
static const T const_max = max_val;
#else
enum {
is_integral = true,
const_min = min_val,
const_max = max_val
};
// The definition is required even for integral static constants
template<class T, T min_val, T max_val>
const T integer_traits_base<T, min_val, max_val>::const_min;
template<class T, T min_val, T max_val>
const T integer_traits_base<T, min_val, max_val>::const_max;
#endif
};
} // namespace detail
template<>
@ -80,7 +81,13 @@ class integer_traits<unsigned char>
public detail::integer_traits_base<unsigned char, 0, UCHAR_MAX>
{ };
// What about wchar_t ?
#ifndef BOOST_NO_INTRINSIC_WCHAR_T
template<>
class integer_traits<wchar_t>
: public std::numeric_limits<wchar_t>,
public detail::integer_traits_base<wchar_t, WCHAR_MIN, WCHAR_MAX>
{ };
#endif // BOOST_NO_INTRINSIC_WCHAR_T
template<>
class integer_traits<short>