This commit was generated by cvs2svn to compensate for changes in r4,

which included commits to RCS files with non-trunk default branches. [SVN r7621]
2000-07-07 16:04:40 +00:00
commit 5c0fd818f9
8 changed files with 837 additions and 0 deletions
--- a/include/boost/integer_traits.hpp
+++ b/include/boost/integer_traits.hpp
@ -0,0 +1,147 @@
+/* boost integer_traits.hpp header file
+ *
+ * Copyright Jens Maurer 2000
+ * Permission to use, copy, modify, sell, and distribute this software
+ * is hereby granted without free provided that the above copyright notice
+ * appears in all copies and that both that copyright notice and this
+ * permission notice appear in supporting documentation,
+ *
+ * Jens Maurer makes no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * $Id$
+ *
+ * Idea by Beman Dawes, Ed Brey, Steve Cleary, and Nathan Myers
+ */
+
+#ifndef BOOST_INTEGER_TRAITS_HPP
+#define BOOST_INTEGER_TRAITS_HPP
+
+#include <limits>
+#include <boost/config.hpp>
+
+// This is an implementation detail and not part of the interface
+#include <limits.h>
+
+
+namespace boost {
+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
+};
+
+namespace detail {
+template<class T, T min_val, T max_val>
+class integer_traits_base
+{
+public:
+#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
+  };
+#endif
+};
+} // namespace detail
+
+template<>
+class integer_traits<bool>
+  : public std::numeric_limits<bool>,
+    public detail::integer_traits_base<bool, false, true>
+{ };
+
+template<>
+class integer_traits<char>
+  : public std::numeric_limits<char>,
+    public detail::integer_traits_base<char, CHAR_MIN, CHAR_MAX>
+{ };
+
+template<>
+class integer_traits<signed char>
+  : public std::numeric_limits<signed char>,
+    public detail::integer_traits_base<signed char, SCHAR_MIN, SCHAR_MAX>
+{ };
+
+template<>
+class integer_traits<unsigned char>
+  : public std::numeric_limits<unsigned char>,
+    public detail::integer_traits_base<unsigned char, 0, UCHAR_MAX>
+{ };
+
+// What about wchar_t ?
+
+template<>
+class integer_traits<short>
+  : public std::numeric_limits<short>,
+    public detail::integer_traits_base<short, SHRT_MIN, SHRT_MAX>
+{ };
+
+template<>
+class integer_traits<unsigned short>
+  : public std::numeric_limits<unsigned short>,
+    public detail::integer_traits_base<unsigned short, 0, USHRT_MAX>
+{ };
+
+template<>
+class integer_traits<int>
+  : public std::numeric_limits<int>,
+    public detail::integer_traits_base<int, INT_MIN, INT_MAX>
+{ };
+
+template<>
+class integer_traits<unsigned int>
+  : public std::numeric_limits<unsigned int>,
+    public detail::integer_traits_base<unsigned int, 0, UINT_MAX>
+{ };
+
+template<>
+class integer_traits<long>
+  : public std::numeric_limits<long>,
+    public detail::integer_traits_base<long, LONG_MIN, LONG_MAX>
+{ };
+
+template<>
+class integer_traits<unsigned long>
+  : public std::numeric_limits<unsigned long>,
+    public detail::integer_traits_base<unsigned long, 0, ULONG_MAX>
+{ };
+
+#ifdef ULLONG_MAX
+template<>
+class integer_traits<long long>
+  : public std::numeric_limits<long long>,
+    public detail::integer_traits_base<long long, LLONG_MIN, LLONG_MAX>
+{ };
+template<>
+class integer_traits<unsigned long long>
+  : public std::numeric_limits<unsigned long long>,
+    public detail::integer_traits_base<unsigned long long, 0, ULLONG_MAX>
+{ };
+#elif defined(ULONG_LONG_MAX)
+template<>
+class integer_traits<long long>
+  : public std::numeric_limits<long long>,
+    public detail::integer_traits_base<long long, LONG_LONG_MIN, LONG_LONG_MAX>
+{ };
+template<>
+class integer_traits<unsigned long long>
+  : public std::numeric_limits<unsigned long long>,
+    public detail::integer_traits_base<unsigned long long, 0, ULONG_LONG_MAX>
+{ };
+#endif
+
+} // namespace boost
+
+#endif /* BOOST_INTEGER_TRAITS_HPP */