Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for a snapshot of the develop branch, built from commit b8adfe0e57.

Reference

Header <boost/crc.hpp>

Header <boost/crc.hpp>

A collection of function templates and class templates that compute various forms of Cyclic Redundancy Codes (CRCs).

Daryle Walker

1.5

Boost Software License, version 1.0

Contains the declarations (and definitions) of various kinds of CRC computation functions, function object types, and encapsulated policy types.

	Warning
	The sample CRC-computer types were just checked against the Catalogue of parametrised CRC algorithms. New type aliases were added where I got a standard wrong. However, the mistaken `typedef`s are still there for backwards compatibility.

	Note
	There are references to the Rocksoft™ Model CRC Algorithm, as described within "A Painless Guide to CRC Error Detection Algorithms," linked from "CRC: A Paper On CRCs" by Ross Williams. It will be abbreviated "RMCA" in other documentation blocks.


BOOST_CRC_PARM_TYPE
BOOST_CRC_OPTIMAL_NAME

namespace boost {
  template<std::size_t Bits> class crc_basic;
  template<std::size_t Bits, unspecified TruncPoly, unspecified InitRem, 
           unspecified FinalXor, bool ReflectIn, bool ReflectRem> 
    class crc_optimal;

  typedef crc_optimal< 16, 0x8005, 0, 0, true, true > crc_16_type;  // Computation type for ARC|CRC-16|CRC-IBM|CRC-16/ARC|CRC-16/LHA standard. 
  typedef crc_optimal< 16, 0x1021, 0xFFFF, 0, false, false > crc_ccitt_false_t;  // Computation type for CRC-16/CCITT-FALSE standard. 
  typedef crc_ccitt_false_t crc_ccitt_type;  // Computation type for the CRC mistakenly called the CCITT standard. 
  typedef crc_optimal< 16, 0x1021, 0, 0, true, true > crc_ccitt_true_t;
  typedef crc_optimal< 16, 0x8408, 0, 0, true, true > crc_xmodem_type;
  typedef crc_optimal< 16, 0x1021, 0, 0, false, false > crc_xmodem_t;  // Computation type for the actual XMODEM|ZMODEM|CRC-16/ACORN standard. 
  typedef crc_optimal< 32, 0x04C11DB7, 0xFFFFFFFF, 0xFFFFFFFF, true, true > crc_32_type;  // Computation type for CRC-32|CRC-32/ADCCP|PKZIP standard. 
  template<std::size_t Bits, unspecified TruncPoly, unspecified InitRem, 
           unspecified FinalXor, bool ReflectIn, bool ReflectRem> 
    unspecified crc(void const *, std::size_t);
  template<std::size_t Bits, unspecified TruncPoly> 
    unspecified augmented_crc(void const *, std::size_t, unspecified = 0u);
}