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Fix logic in cstdint to prefer smaller integers when possible.

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Improve PP-logic in integer-traits.
Suppress some compiler warnings.

[SVN r65721]
This commit is contained in:
John Maddock
2010-10-02 12:14:04 +00:00
parent 245c28d187
commit 614515a77b
4 changed files with 126 additions and 31 deletions
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24
include/boost/integer/integer_mask.hpp
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@ -20,6 +20,17 @@
#include <boost/limits.hpp> // for std::numeric_limits
//
// We simply cannot include this header on gcc without getting copious warnings of the kind:
//
// boost/integer/integer_mask.hpp:93:35: warning: use of C99 long long integer constant
//
// And yet there is no other reasonable implementation, so we declare this a system header
// to suppress these warnings.
//
#if defined(__GNUC__) && (__GNUC__ >= 4)
#pragma GCC system_header
#endif
namespace boost
{
@ -89,6 +100,19 @@ BOOST_LOW_BITS_MASK_SPECIALIZE( unsigned int );
BOOST_LOW_BITS_MASK_SPECIALIZE( unsigned long );
#endif
#if defined(BOOST_HAS_LONG_LONG)
#if ((defined(ULLONG_MAX) && (ULLONG_MAX > ULONG_MAX)) ||\
(defined(ULONG_LONG_MAX) && (ULONG_LONG_MAX > ULONG_MAX)) ||\
(defined(ULONGLONG_MAX) && (ULONGLONG_MAX > ULONG_MAX)) ||\
(defined(_ULLONG_MAX) && (_ULLONG_MAX > ULONG_MAX)))
BOOST_LOW_BITS_MASK_SPECIALIZE( boost::ulong_long_type );
#endif
#elif defined(BOOST_HAS_MS_INT64)
#if 18446744073709551615ui64 > ULONG_MAX
BOOST_LOW_BITS_MASK_SPECIALIZE( unsigned __int64 );
#endif
#endif
#ifdef BOOST_MSVC
#pragma warning(pop)
#endif