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Diffstat (limited to '3rdParty/Boost/src/boost/integer/integer_mask.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/integer/integer_mask.hpp | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/integer/integer_mask.hpp b/3rdParty/Boost/src/boost/integer/integer_mask.hpp new file mode 100644 index 0000000..2acf7f7 --- /dev/null +++ b/3rdParty/Boost/src/boost/integer/integer_mask.hpp @@ -0,0 +1,126 @@ +// Boost integer/integer_mask.hpp header file ------------------------------// + +// (C) Copyright Daryle Walker 2001. +// Distributed under the Boost Software License, Version 1.0. (See +// accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) + +// See http://www.boost.org for updates, documentation, and revision history. + +#ifndef BOOST_INTEGER_INTEGER_MASK_HPP +#define BOOST_INTEGER_INTEGER_MASK_HPP + +#include <boost/integer_fwd.hpp> // self include + +#include <boost/config.hpp> // for BOOST_STATIC_CONSTANT +#include <boost/integer.hpp> // for boost::uint_t + +#include <climits> // for UCHAR_MAX, etc. +#include <cstddef> // for std::size_t + +#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 +{ + + +// Specified single-bit mask class declaration -----------------------------// +// (Lowest bit starts counting at 0.) + +template < std::size_t Bit > +struct high_bit_mask_t +{ + typedef typename uint_t<(Bit + 1)>::least least; + typedef typename uint_t<(Bit + 1)>::fast fast; + + BOOST_STATIC_CONSTANT( least, high_bit = (least( 1u ) << Bit) ); + BOOST_STATIC_CONSTANT( fast, high_bit_fast = (fast( 1u ) << Bit) ); + + BOOST_STATIC_CONSTANT( std::size_t, bit_position = Bit ); + +}; // boost::high_bit_mask_t + + +// Specified bit-block mask class declaration ------------------------------// +// Makes masks for the lowest N bits +// (Specializations are needed when N fills up a type.) + +template < std::size_t Bits > +struct low_bits_mask_t +{ + typedef typename uint_t<Bits>::least least; + typedef typename uint_t<Bits>::fast fast; + + BOOST_STATIC_CONSTANT( least, sig_bits = (~( ~(least( 0u )) << Bits )) ); + BOOST_STATIC_CONSTANT( fast, sig_bits_fast = fast(sig_bits) ); + + BOOST_STATIC_CONSTANT( std::size_t, bit_count = Bits ); + +}; // boost::low_bits_mask_t + + +#define BOOST_LOW_BITS_MASK_SPECIALIZE( Type ) \ + template < > struct low_bits_mask_t< std::numeric_limits<Type>::digits > { \ + typedef std::numeric_limits<Type> limits_type; \ + typedef uint_t<limits_type::digits>::least least; \ + typedef uint_t<limits_type::digits>::fast fast; \ + BOOST_STATIC_CONSTANT( least, sig_bits = (~( least(0u) )) ); \ + BOOST_STATIC_CONSTANT( fast, sig_bits_fast = fast(sig_bits) ); \ + BOOST_STATIC_CONSTANT( std::size_t, bit_count = limits_type::digits ); \ + } + +#ifdef BOOST_MSVC +#pragma warning(push) +#pragma warning(disable:4245) // 'initializing' : conversion from 'int' to 'const boost::low_bits_mask_t<8>::least', signed/unsigned mismatch +#endif + +BOOST_LOW_BITS_MASK_SPECIALIZE( unsigned char ); + +#if USHRT_MAX > UCHAR_MAX +BOOST_LOW_BITS_MASK_SPECIALIZE( unsigned short ); +#endif + +#if UINT_MAX > USHRT_MAX +BOOST_LOW_BITS_MASK_SPECIALIZE( unsigned int ); +#endif + +#if ULONG_MAX > UINT_MAX +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 + +#undef BOOST_LOW_BITS_MASK_SPECIALIZE + + +} // namespace boost + + +#endif // BOOST_INTEGER_INTEGER_MASK_HPP |