pabigot::crc::details::uint_traits< C > Struct Template Reference

Extend the size-related traits with functionality operating on the specific types. More...

#include </mnt/devel/pabigot-cxx/include/pabigot/crc.hpp>

Inheritance diagram for pabigot::crc::details::uint_traits< C >:

Public Types
using	super = uint_size_traits< C >
using	fast_limits = std::numeric_limits< fast_type >

Static Public Member Functions
static constexpr fast_type	reverse (const fast_type &v, unsigned int bits)
	Reverse bits [0..bits) of v. More...
static constexpr fast_type	mask_for_bits (unsigned int bits)
	Helper to calculate the value of a B-bit mask as an instance of the unsigned type T. More...

Detailed Description

template<unsigned int C>
struct pabigot::crc::details::uint_traits< C >

Extend the size-related traits with functionality operating on the specific types.

Specifically, provide the ability to bit-reverse a value stored in the low bits of a word. This supports the requirements of a reflected (LSB-first) algorithm.

Member Function Documentation

mask_for_bits()

template<unsigned int C>

static constexpr fast_type pabigot::crc::details::uint_traits< C >::mask_for_bits ( unsigned int  bits )

inlinestaticconstexpr

Helper to calculate the value of a B-bit mask as an instance of the unsigned type T.

Need this evaluated at compile-time, supporting both cases where T can represent strictly more bits than are needed and where T represents exactly that many bits.

Template Parameters

T	an unsigned integral type.

Parameters

bits	the number of bits to be masked. If bits is greater than the number of bits representable in T undefined behavior may result.

reverse()

template<unsigned int C>

static constexpr fast_type pabigot::crc::details::uint_traits< C >::reverse ( const fast_type &  v, unsigned int  bits  )

inlinestaticconstexpr

Reverse bits [0..bits) of v.

See also

reverse_low_bits

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The documentation for this struct was generated from the following file:

• /mnt/devel/pabigot-cxx/include/pabigot/crc.hpp