diff -r 000000000000 -r e4d67989cc36 ossrv_pub/boost_apis/boost/integer/integer_mask.hpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ossrv_pub/boost_apis/boost/integer/integer_mask.hpp Tue Feb 02 02:01:42 2010 +0200 @@ -0,0 +1,93 @@ +// 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 // self include + +#include // for BOOST_STATIC_CONSTANT +#include // for boost::uint_t + +#include // for UCHAR_MAX, etc. +#include // for std::size_t + +#include // for std::numeric_limits + + +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::least least; + typedef typename uint_t::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::digits > { \ + typedef std::numeric_limits limits_type; \ + typedef uint_t::least least; \ + typedef uint_t::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 ); \ + } + +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 + +#undef BOOST_LOW_BITS_MASK_SPECIALIZE + + +} // namespace boost + + +#endif // BOOST_INTEGER_INTEGER_MASK_HPP