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Topic: Bit vector

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	Bit::Vector - efficient base class implementing bit vectors.
		Intersection $vector3 = $vector1 and $vector2; $vector1 and= $vector2; $vector2 = $vector1 and $scalar; $vector and= $scalar;
		Division $vector3 = $vector1 / $vector2; $vector1 /= $vector2; $vector1 = $vector2 / $vector1; $vector2 = $vector1 / $scalar; $vector2 = $scalar / $vector1; $vector /= $scalar;
		Modulo $vector3 = $vector1 % $vector2; $vector1 %= $vector2; $vector1 = $vector2 % $vector1; $vector2 = $vector1 % $scalar; $vector2 = $scalar % $vector1; $vector %= $scalar;
	www.xav.com /perl/site/lib/Bit/Vector.html (7891 words)

	Bit array - Wikipedia, the free encyclopedia
		Bit arrays can be used for the allocation of memory pages, inodes, disk sectors, etc. In such cases, the term bitmap may be used.
		Bit arrays and the operations on them are also important for constructing succinct data structures, which use close to the minimum possible space.
		Bit arrays are also a useful abstraction for examining streams of compressed data, which often contain elements that occupy portions of bytes or are not byte-aligned.
	en.wikipedia.org /wiki/Bit_array (1611 words)

	Bit Vectors - Guile Reference Manual (Site not responding. Last check: 2007-11-04)
		Bit vectors are zero-origin, one-dimensional arrays of booleans.
		Bit vectors are are also generalized vectors, See Generalized Vectors, and can thus be used with the array procedures, See Arrays.
		Bit vectors are the special case of one dimensional bit arrays.
	www.gnu.org /software/guile/docs/docs-1.8/guile-ref/Bit-Vectors.html (261 words)

	BitVector (Colt 1.2.0 - API Specification)
		Constructs and returns a new bit vector which is a copy of the given range.
		Replaces the bits of the receiver in the given range with the bits of another bit vector.
		The i-th bit is stored in bits[i/64] at bit position i % 64 (where bit position 0 refers to the least significant bit and 63 refers to the most significant bit).
	dsd.lbl.gov /~hoschek/colt/api/cern/colt/bitvector/BitVector.html (1865 words)

	Bit Vector, Using Perl Vec
		A bit vector is just an array of bits; subsets of bits within the bytes have some meaning.
		The use of vector in this context probably came from jump tables: the bits represent a place for code to jump to, and therefor are at least vaguely related to the physics/engineering definition of a vector quantity (maginitude and direction).
		Its granularity is a little bit limited: the number of bits you want to examine or set has to be a power of 2, so you can't (for example) conveniently work with three bit fields.
	www.developertutorials.com /tutorials/cgi-perl/using-perl-vec-050719/page1.html (276 words)

	CLHS: System Class BIT-VECTOR (Site not responding. Last check: 2007-11-04)
		A bit vector is a vector the element type of which is bit.
		The type bit-vector is a subtype of type vector, for bit-vector means
		; that is, the set of bit vectors of size size.
	www.lisp.org /HyperSpec/Body/syscla_bit-vector.html (74 words)

	ACM Lisp Pointers 3, 2-4 (Apr/Jun 1990), 8-22.
		Very few computers offer addressing capabilities down to the individual bit, and demand that words be addressed on "word boundaries", so there are the possibilities that incomplete words need to be processed, and that two bits which are to be combined may reside at different bit locations within a word.
		In addition, these functions must also be careful not to disturb bits earlier in the word before the first element or later in the last word, because the underlying simple-array may also be accessible to the user, and bits which are not participating in the "bit-xxx" function should not be affected.
		A 256-element table is used to reverse the bits within an 8-bit byte, and this table is used twice to reverse the bits in a 16-bit word.
	home.pipeline.com /~hbaker1/Bitvectors.html (6148 words)

	AnnoCPAN - Tie::VecArray
		If $vec is given that will be used as the bit vector, otherwise the vector will start out empty.
		Get/set the bit size we'll use to interpret the vector.
		When setting the bit size the length of the array might be ambiguous.
	www.annocpan.org /~MSCHWERN/Tie-VecArray-0.01/lib/Tie/VecArray.pm (238 words)

	H. Baker -- Efficient Bit-vector Searching
		We must now ignore some of the bits in the process of trying to perform the match--i.e., we may now have some "don't care" items at the beginning and the end of the pattern.
		If the "CanStart" table entry is a bit-vector whose "on" bits indicate the leftmost position of a succeeding match; i.e., if bit #'s 0,3, and 4 are all on, then the pattern can start in those bit positions within the index byte.
		requires a bit more complexity, because the pattern may be positioned in a byte in such a way that we have "don't care" bits at both ends of the byte.
	www.pipeline.com /~hbaker1/BitSearch.html (3444 words)

	A Bit Vector Class in Python (Site not responding. Last check: 2007-11-04)
		which creates a bit vector that is initialized with the bits shown in the argument.
		Note that it is not necessary for the size of the vector to be a multiple of 16 even though we are using C's unsigned short as as a basic unit for storing the bit arrays.
		Now the bit vector constructed will be initialized at the same time with the supplied bits.
	rvl4.ecn.purdue.edu /~kak/dist/BitVector-1.0.html (1015 words)

	Python: module BitVector (Site not responding. Last check: 2007-11-04)
		This bit vector itself is incapable of holding the bits.
		bits of bitvec1 followed by all the bits of bitvec2.
		bits in the bit vector through the "size" instance attribute.
	rvl4.ecn.purdue.edu /~kak/dist/BitVector-1.2.html (1861 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		PRE: nelems is the number of Boolean values required in an array POST: either a pointer to an initialized (all zero) array of bit OR space was not available and NULL was returned NOTE: calloc() guarantees that the space has been initialized to 0.
		POST: Either `dest' points to a null-terminated string that contains a character representation of the first `size' elements of the bit array `arr'; OR `dest' is NULL and a request to dynamically allocate memory for a string to hold a character representation of `arr' was not be granted.
		POST: All the bits in `arr' have been flipped and `arr' is in canonical form.
	www.csd.uwo.ca /~jamie/BitVectors/bitarr.c (874 words)

	Bit::Vector - Efficient bit vector, set of integers and "big int" math library
		'', all three bit vector arguments must in principle obey the rule of matching sizes, but the bit vector in which the result of the multiplication is to be stored may be larger than the two bit vector arguments containing the factors for the multiplication.
		If the source bit vector is larger than the target, this method will copy as much of the least significant bits of the source vector as will fit into the target vector, thereby discarding any extraneous most significant bits.
		If the target bit vector is larger than the source, this method fills up the remaining most significant bits in the target bit vector with either 0's or 1's, depending on the sign (= the most significant bit) of the source bit vector.
	cpan.uwinnipeg.ca /htdocs/Bit-Vector/Bit/Vector.html (12118 words)

	Bit::Vector::String - Generic string import/export for Bit::Vector
		Note that since an octal digit is always worth three bits, the length of the resulting string is always a multiple of three bits, regardless of the true length (in bits) of the given bit vector.
		Remember also that the least significant bits are always to the right of an octal string, and the most significant bits to the left.
		In case of an error, the memory occupied by the new bit vector is released again before the exception is actually thrown.
	cpan.uwinnipeg.ca /htdocs/Bit-Vector/Bit/Vector/String.html (1833 words)

	XEmacs Lisp Reference Manual - Bit Vector Functions (Site not responding. Last check: 2007-11-04)
		This function creates and returns a bit vector whose elements are the arguments
		This function returns a new bit vector containing all the elements of the
		may be lists, vectors, or bit vectors, all of whose elements are the integers 0 or 1.
	www.tau.ac.il /cc/pages/docs/xemacs/lispref_125.html (234 words)

	bit_vector
		Defined in the standard header vector, and in the nonstandard backward-compatibility header bvector.h.
		, rather than a fixed constant: in the former case inserting a series of bits into a bit_vector is a linear time operation, and in the latter case it is quadratic.
		Additionally, inserting or deleting a bit in the middle of a bit_vector invalidates all iterators that point to bits following the insertion or deletion point.
	www.sgi.com /tech/stl/bit_vector.html (593 words)

	Bit-Vector Research Page Ulm
		Denoting a bit-vector of the width n, containing the same bit at each position.
		This bit can be a constant or a variable.
		The leftmost bit is considered to be the least significant one.
	www.informatik.uni-ulm.de /ki/Bitvector/bitvector-e.html (554 words)

	2.5.3. Bit-Vectors (Site not responding. Last check: 2007-11-04)
		A bit-vector can be written as the sequence of bits contained in the string, preceded by
		#10110 ;A five-bit bit-vector; bit* 0 is a 1 #* ;An empty bit-vector
		The leftmost notated bit is bit-vector element number 0, the next one is element number 1, and so on.
	www.cs.brandeis.edu /~cs35a/cltl/clm/node32.html (100 words)

	Debian -- libbit-vector-perl
		Perl and C library for bit vectors and more
		Bit::Vector is an efficient C library which allows you to handle bit vectors, sets (of integers), "big integer arithmetic" and boolean matrices, all of arbitrary sizes.
		The library is efficient (in terms of algorithmical complexity) and therefore fast (in terms of execution speed) for instance through the widespread use of divide-and-conquer algorithms.
	packages.debian.org /testing/perl/libbit-vector-perl.html (151 words)

	Vhdl Add Bit_vector
		For the bit type, the IEEE type is STD_LOGIC and for a bit_vector it...
		predefined for bit, boolean, bit_vector, linear arrays of boolean...
		The Major modification was the package type, -- 16-bit part number and add safe bit to all output2 cell.
	www.kids-add.com /add/vhdl-add-bit_vector.htm (832 words)

	bit vector in c - Dev Shed
		Discuss bit vector in c in the C Programming forum on Dev Shed.
		bit vector in c C programming forum discussing all C derivatives, including C#, C++, Object-C, and even plain old vanilla C. These languages are low level languages, and used on projects such as device drivers, compilers, and even whole computer operating systems.
		Even a byte might not be 8 bits; the definition of a byte is simply 'the smallest addressable unit of memory of a computer'.
	forums.devshed.com /c-programming-42/bit-vector-in-c-212182.html (1413 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		The method will copy as much as will fit or fill up with 0's or 1's (depending on the sign of the source) if necessary.
		Version 5.7 19.05.1999 + Improved method "Div_Pos()": It now uses only one instead of the former two (very costly) "shift" operations in its main loop, and it now depends on the (variable) length of the numbers involved rather than the (constant) length of their respective bit vectors, making this method tremendously faster now.
		Version 3.1 21.01.1997 + Fixed a bug that caused the initialization routine of the module to fail on 64 bit machines due to a wrong conditional expression (type "int" and "size_t" do not necessarily have the same size!).
	directory.fsf.org /ChangeLogs/Bit-Vector.html (1668 words)

	BitVector (Lucene 2.1-dev API)
		Returns the total number of one bits in this vector.
		This is also one greater than the number of the largest valid bit number.
		This is efficiently computed and cached, so that, if the vector is not changed, no recomputation is done for repeated calls.
	lucene.apache.org /java/docs/api/org/apache/lucene/util/BitVector.html (134 words)

	bit vector (Site not responding. Last check: 2007-11-04)
		Note: A bit vector can often be handled very efficiently since a computer word is an array of bits.
		Go to the Dictionary of Algorithms and Data Structures home page.
		Paul E. Black, "bit vector", from Dictionary of Algorithms and Data Structures, Paul E. Black, ed., NIST.
	www.darkridge.com /~jpr5/archive/dads/HTML/bitVector.html (70 words)

	Bit-vector Encodings (Site not responding. Last check: 2007-11-04)
		One idea to achieve these tests is to associate with each element of the poset a subset of a set S={1,...,k} such that the reachability question coincides with subset inclusion.
		These subsets can be represented by bit vectors of size k.
		For this reason, these encodings are called bit-vector encodings.
	perso.ens-lyon.fr /eric.thierry/bitvector.html (406 words)

	STL bit_vector to a binary file - LinuxQuestions.org
		If someone really knows, please tell me. If it isn't possible i'll have to use an auxiliary array, isn't it ?
		Just take every eight bits, put them together into a byte, and then write the byte.
		There's nothing special about a bit vector from other types of vectors (how would you "store" other types of vectors?).
	www.linuxquestions.org /questions/showthread.php?t=415926&goto=newpost (297 words)

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