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	<html><!-- Created using the cpp_pretty_printer from the dlib C++ library. See http://dlib.net for updates. --><head><title>dlib C++ Library - crc32_kernel_abstract.h</title></head><body bgcolor='white'><pre>
	<font color='#009900'>// Copyright (C) 2005 Davis E. King ([email protected])
	</font><font color='#009900'>// License: Boost Software License See LICENSE.txt for the full license.
	</font><font color='#0000FF'>#undef</font> DLIB_CRC32_KERNEl_ABSTRACT_
	<font color='#0000FF'>#ifdef</font> DLIB_CRC32_KERNEl_ABSTRACT_

	<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../algs.h.html'>../algs.h</a>"
	<font color='#0000FF'>#include</font> <font color='#5555FF'><</font>string<font color='#5555FF'>></font>
	<font color='#0000FF'>#include</font> <font color='#5555FF'><</font>vector<font color='#5555FF'>></font>

	<font color='#0000FF'>namespace</font> dlib
	<b>{</b>

	<font color='#0000FF'>class</font> <b><a name='crc32'></a>crc32</b>
	<b>{</b>
	<font color='#009900'>/*!
	INITIAL VALUE
	The current checksum covers zero bytes.
	get_checksum() == 0x00000000

	WHAT THIS OBJECT REPRESENTS
	This object represents the CRC32 algorithm for calculating
	checksums.
	!*/</font>

	<font color='#0000FF'>public</font>:

	<b><a name='crc32'></a>crc32</b> <font face='Lucida Console'>(</font>
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- #*this is properly initialized
	!*/</font>

	<b><a name='crc32'></a>crc32</b> <font face='Lucida Console'>(</font>
	<font color='#0000FF'>const</font> std::string<font color='#5555FF'>&</font> item
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- #*this is properly initialized
	- calls this->add(item).
	(i.e. Using this constructor is the same as using the default
	constructor and then calling add() on item)
	!*/</font>

	<b><a name='crc32'></a>crc32</b> <font face='Lucida Console'>(</font>
	<font color='#0000FF'>const</font> std::vector<font color='#5555FF'><</font><font color='#0000FF'><u>char</u></font><font color='#5555FF'>></font><font color='#5555FF'>&</font> item
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- #*this is properly initialized
	- calls this->add(item).
	(i.e. Using this constructor is the same as using the default
	constructor and then calling add() on item)
	!*/</font>

	<font color='#0000FF'>virtual</font> ~<b><a name='crc32'></a>crc32</b> <font face='Lucida Console'>(</font>
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- any resources associated with *this have been released
	!*/</font>

	<font color='#0000FF'><u>void</u></font> <b><a name='clear'></a>clear</b><font face='Lucida Console'>(</font>
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- #*this has its initial value
	!*/</font>

	<font color='#0000FF'><u>void</u></font> <b><a name='add'></a>add</b> <font face='Lucida Console'>(</font>
	<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font> item
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- #get_checksum() == The checksum of all items added to *this previously
	concatenated with item.
	!*/</font>

	<font color='#0000FF'><u>void</u></font> <b><a name='add'></a>add</b> <font face='Lucida Console'>(</font>
	<font color='#0000FF'>const</font> std::string<font color='#5555FF'>&</font> item
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- #get_checksum() == The checksum of all items added to *this previously
	concatenated with item.
	!*/</font>

	<font color='#0000FF'><u>void</u></font> <b><a name='add'></a>add</b> <font face='Lucida Console'>(</font>
	<font color='#0000FF'>const</font> std::vector<font color='#5555FF'><</font><font color='#0000FF'><u>char</u></font><font color='#5555FF'>></font><font color='#5555FF'>&</font> item
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- #get_checksum() == The checksum of all items added to *this previously
	concatenated with item.
	!*/</font>

	<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> <b><a name='get_checksum'></a>get_checksum</b> <font face='Lucida Console'>(</font>
	<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
	<font color='#009900'>/*!
	ensures
	- returns the current checksum
	!*/</font>

	<b><a name='operator'></a>operator</b> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> <font face='Lucida Console'>(</font>
	<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
	<font color='#009900'>/*!
	ensures
	- returns get_checksum()
	!*/</font>

	<font color='#0000FF'><u>void</u></font> <b><a name='swap'></a>swap</b> <font face='Lucida Console'>(</font>
	crc32<font color='#5555FF'>&</font> item
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- swaps *this and item
	!*/</font>

	<b>}</b>;

	<font color='#0000FF'><u>void</u></font> <b><a name='swap'></a>swap</b> <font face='Lucida Console'>(</font>
	crc32<font color='#5555FF'>&</font> a,
	crc32<font color='#5555FF'>&</font> b
	<font face='Lucida Console'>)</font> <b>{</b> a.<font color='#BB00BB'>swap</font><font face='Lucida Console'>(</font>b<font face='Lucida Console'>)</font>; <b>}</b>
	<font color='#009900'>/*!
	provides a global swap function
	!*/</font>

	<b>}</b>

	<font color='#0000FF'>#endif</font> <font color='#009900'>// DLIB_CRC32_KERNEl_ABSTRACT_
	</font>

	</pre></body></html>