Metadata-Version: 1.2
Name: crcengine
Version: 0.2.0
Summary: A library for CRC calculation
Home-page: https://github.com/GardenTools/crcengine
Author: Garden Tools
Author-email: gardensofdorwinion@gmail.com
License: GNU General Public License v3
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             :alt: Updates
        
        =========
        CrcEngine
        =========
        A python library for CRC calculation providing table-based as well as
        bit-bashing implementations (for reference).
        
        * Free software: GNU General Public License v3
        * Documentation: https://crcengine.readthedocs.io.
        
        Installing
        ----------
        CrcEngine can be installing using pip with
        
        .. code-block:: python
        
            pip install crcengine
        
        Usage
        -----
        Pre-defined algorithms such as CRC32 are available. Tailored algorithms can
        be created by calling CrcEngine.create() and other related methods.
        
        A calculation engine for a specific named algorithm can be obtained using
        CrcEngine.new(). Algorithms which are not pre-defined can be created using
        CrcEngine.create() 
        
        A list of pre-defined algorithms can be obtained using crcengine.algorithms_available()
        
        .. code-block:: python
        
           >>> list(crcengine.algorithms_available())
           ['crc8', 'crc8-autosar', 'crc8-bluetooth', 'crc8-ccitt', 'crc8-gsm-b', 'crc8-sae-j1850', 'crc15-can', 'crc16-kermit', 'crc16-ccitt-true', 'crc16-xmodem', 'crc16-autosar', 'crc16-ccitt-false', 'crc16-cdma2000', 'crc16-ibm', 'crc16-modbus', 'crc16-profibus', 'crc24-flexray16-a', 'crc24-flexray16-b', 'crc32', 'crc32-bzip2', 'crc32-c', 'crc64-ecma']
        
        Examples
        --------
        Using a pre-defined algorithm
        
        .. code-block:: python
        
          import crcengine
          crc_algorithm = crcengine.new('crc32-bzip2')
          result = crc_algorithm(b'123456789')
          print('CRC=0x{:08x}'.format(result))
        
        Output:
        > CRC=0xfc891918
        
        Defining an algorithm
        
        .. code-block:: python
        
          import crcengine
          crc_openpgp = crcengine.create(0x864cfb, 24, 0xb704ce, ref_in=False,
                                         ref_out=False, xor_out=0, name='crc-24-openpgp')
        
        
        Code Generation
        ---------------
        The library can generate C code for a given table-algorithm. The code produced
        is intended to be a reasonable compromise between size, complexity and speed
        without requiring allocation of memory for table generation at runtime.
        
        Faster implementations of specific algorithms can be achieved in software which
        unroll loops and pipeline the operations different bytes to introduce
        parallelism in the calculation see intel_soft_src_ for example. Some processors
        also include instructions specifically for crc calculation.
        
        .. _intel_soft_src: https://github.com/intel/soft-crc
        
        Code Generation Example usage:
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        Generating code into a directory named "out" by passing CRC parameters
        
        .. code-block:: python
        
            params = crcengine.get_algorithm_params('crc32')
            crcengine.generate_code(params, 'out/')
        
        or referencing the algorithm by name
        
        .. code-block:: python
        
            crcengine.generate_code('crc16-xmodem', 'out/')
        
        
        Downloading
        -----------
        - The source is available on github_
        - Git clone crcengine.git_
        - On pypi.org_
        
        .. _github: https://github.com/GardenTools/crcengine
        .. _crcengine.git: https://github.com/GardenTools/crcengine.git
        .. _pypi.org: https://pypi.org/project/crcengine/
        
        Builds
        -------
        CI builds for pull requests are performed on travis_ci_
         
        .. _travis_ci: https://travis-ci.com/GardenTools/crcengine
        
        --------
        
        With thanks to Greg Cook for providing such a thoroughly collated list of
        `CRC definitions`_
        
        .. _CRC definitions: http://reveng.sourceforge.net/crc-catalogue/all.htm
        
        
Keywords: crcengine
Platform: UNKNOWN
Classifier: Development Status :: 3 - Alpha 
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: GNU General Public License v3 (GPLv3)
Classifier: Natural Language :: English
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Requires-Python: >=3.5
