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Topic: Bitwise operation


In the News (Mon 28 May 12)

  
  MSNP8:Bitwise AND - MSNPiki
Bitwise NOT is useful in finding the one's complement of a binary numeral, and may be an intermediate step in finding the two's complement of the same numeral.
The bitwise OR may be used in situations where a set of bits are used as flags; the bits in a single binary numeral may each represent a distinct Boolean variable.
This operation may be used to isolate part of a string of bits, or to determine whether a particular bit is 1 or 0.
msnpiki.msnfanatic.com /index.php/MSNP8:Bitwise_AND   (1546 words)

  
  Bitwise - CryptoDox
Bitwise NOT is useful in finding the one's complement of a binary numeral, and may be an intermediate step in finding the two's complement of the same numeral.
The bitwise OR may be used in situations where a set of bits are used as flags; the bits in a single binary numeral may each represent a distinct Boolean variable.
This operation may be used to isolate part of a string of bits, or to determine whether a particular bit is 1 or 0.
cryptodox.com /Bitwise?title=Bitwise&printable=yes   (838 words)

  
  Bitwise operation - Wikipedia, the free encyclopedia
Bitwise NOT is useful in finding the one's complement of a binary numeral, and may be an intermediate step in finding the two's complement of the same numeral.
The bitwise OR may be used in situations where a set of bits are used as flags; the bits in a single binary numeral may each represent a distinct Boolean variable.
This operation may be used to isolate part of a string of bits, or to determine whether a particular bit is 1 or 0.
en.wikipedia.org /wiki/Bitwise_operation   (1652 words)

  
 Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal
The bitwise NOT, or complement, is a unary operation which performs logical negation on each bit, forming the ones' complement of the given binary value.
The bit shifts are sometimes considered bitwise operations, since they operate on the binary representation of an integer instead of its numerical value; however, the bit shifts do not operate on pairs of corresponding bits, and therefore cannot properly be called bit-wise operations.
Bitwise operations are necessary for much low-level programming, such as writing device drivers, low-level graphics, communications protocol packet assembly and decoding.
www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=bitwise_operation   (1654 words)

  
 Definition of Bitwise operation
On many architectures, the XOR operation requires fewer CPU clock cycles than the sequence of operations that may be required to load a zero value and save it to the register.
The bitwise XOR may also be used to toggle flags in a set of bits.
All operations can be created just by combining the bitwise operators, their usage is not limited to multiplying with the powers of two only.
www.wordiq.com /definition/Bitwise_operation   (1285 words)

  
 GameDev.net - Bitwise Operations in C
The former is represented by the && operator, and the latter uses the & operator.
A bitwise NOT simply inverts all the bits in its operand, meaning that all 0s are changed to 1s, and vice versa.
Bitwise operations are extremely fast for the processor to handle, so this is nice and quick, as well as a way to rid yourself of a temporary variable, which can be very nice.
www.gamedev.net /reference/articles/article1563.asp   (5273 words)

  
 Bitwise operation - Definition, explanation
The logical "not" is not normally considered a bitwise operation, since it does not operate at the bit level.
On many architectures, the XOR operation requires fewer CPU clock cycles than the sequence of operations that may be required to load a zero value and save it to the register.
All operations can be created just by combining the bitwise operators, their usage is not limited to multiplying with the powers of two only.
www.calsky.com /lexikon/en/txt/b/bi/bitwise_operation.php   (1274 words)

  
 Bitwise Functions - The GNU Awk User's Guide
Three common operations are bitwise AND, OR, and XOR.
Finally, two other common operations are to shift the bits left or right.
For all of these functions, first the double-precision floating-point value is converted to the widest C unsigned integer type, then the bitwise operation is performed.
www.gnu.org /software/gawk/manual/html_node/Bitwise-Functions.html   (566 words)

  
 C# Logical Bitwise Operators :: BlackWasp Software Development
The bitwise AND operator is generally used to test the values of bits within a larger integer value.
To achieve a bitwise AND operation, the operator used is the ampersand (and).
To achieve a bitwise XOR operation, the operator used is the caret character (^).
www.blackwasp.co.uk /CSharpLogicalBitwiseOps.aspx   (1291 words)

  
 Bit Manipulation, Part III
You won't have use of this until later, but the bitwise OR operation in C is represented by the single pipe character, .
The bitwise XOR operation in C is represented by the single caret ^.
Bitwise NOT in C is represented by the ~ tilde character.
www.technoplaza.net /programming/lesson8p3.php   (2578 words)

  
 Abacus Calculated Fields for ACT! 2005/2006 ( add-on products for ACT!2005 and ACT!2006 ). CRM software consulting, ...   (Site not responding. Last check: 2007-10-12)
An operator in a string expression that concatenates two or more character or binary strings, fields, or a combination of strings and field names into one expression (a string operator).
The and bitwise operator can be used only on expressions of the integer data type category.
bitwise operator requires two expressions, and it can be used on expressions of only the integer data type category.
www.actpresentation.com /operators.htm   (1718 words)

  
 [No title]
A pre-decrement and post-decrement unary operator that subtracts 1 from the
and(bitwise AND), and= (bitwise AND assignment), ^ (bitwise XOR), ^= (bitwise XOR assignment),
and(bitwise AND), and= (bitwise AND assignment), ^ (bitwise XOR), ^= (bitwise XOR assignment), = (bitwise OR assignment), ~ (bitwise NOT)
www.brajeshwar.com /reference/as2/operators.html   (7846 words)

  
 Bitwise Operator (Fixed-Point Blockset)
The Bitwise Operator block is a masked S-function that performs the specified bitwise operation on its operands.
Unlike the logic operations performed by the Logical Operator block, bitwise operations treat the operands as a vector of bits rather than a single number.
For a single vector input, the block applies the operation (except the NOT operator) to all elements of the vector.
www-rohan.sdsu.edu /doc/matlab/toolbox/fixpoint/bitwiseoperator.html   (736 words)

  
 Felix Halim .NET -   (Site not responding. Last check: 2007-10-12)
To be able to understand bitwise operation, you have to be very familiar with base 2.
This operator is also depends highly on the length of the bits of an int variable.
This operator is mostly used if you want to divide a number by 2, or other division by the power of 2.
felix-halim.net /pg/bitwise/index.php   (1076 words)

  
 Operators (Flex™ 2 Language Reference)   (Site not responding. Last check: 2007-10-12)
operator creates an object in memory, and a reference to that location in memory is assigned to a variable.
The bitwise AND of 13 (binary 1101) and 11 (binary 1011) is 9 because only the first and last positions in both numbers have the number 1.
This operator is also known as the one's complement operator or the bitwise complement operator.
livedocs.macromedia.com /flex/2/langref/operators.html   (7696 words)

  
 Felix Halim .NET - Bitwise Operations
To be able to understand bitwise operation, you have to be very familiar with base 2.
This operator is also depends highly on the length of the bits of an int variable.
This operator is mostly used if you want to divide a number by 2, or other division by the power of 2.
www.felix-halim.net /pg/bitwise/index.php   (1120 words)

  
 [No title]   (Site not responding. Last check: 2007-10-12)
The core idea of this group of functions is this bitwise "lifting" of the set of dyadic boolean functions to bitstring parameters; the variadic generalisations are made where sensible.
(define (bitwise-nand i j) (bitwise-not (bitwise-and i j))) (define (bitwise-nor i j) (bitwise-not (bitwise-ior i j))) (define (bitwise-andc1 i j) (bitwise-and (bitwise-not i) j)) (define (bitwise-andc2 i j) (bitwise-and i (bitwise-not j))) (define (bitwise-orc1 i j) (bitwise-ior (bitwise-not i) j)) (define (bitwise-orc2 i j) (bitwise-ior i (bitwise-not j))) (define (bitwise-eqv.
This is consistent with an "operation currying" convention, wherein the arguments that determine the operation come first, and the actual value upon which we operate comes last.
www.cc.gatech.edu /~shivers/srfi/srfi-33.txt   (3261 words)

  
 MusicWonk Logic Modules
Bitwise operations treat the individual binary digits (bits) as separate parameters, and return a value based on the logical operation of the individual bits.
The OR function is always bitwise, however the resulting truth of the operation works the same whether you are treating it as a bitwise operation or a logical operation on the entire value.
This is a bitwise inversion of the input.
algoart.com /help/musicwonk/logical.htm   (1734 words)

  
 Operations and Expressions — MetaQuotes Language 4
The operations of adding/subtracting 1 cannot be implemented in expressions.
All boolean operations are calculated, in other words the boolean evaluation is not short-circuited.
Bitwise operation AND of binary-coded x and y representations.
www.metaquotes.net /experts/mql4/operation   (866 words)

  
 [No title]
A bitwise operation is one in which each bit is treated independently of all the other bits in a number.
In Avida, a logic operation is done in a bitwise fashion, so that the operation is effectively performed 32 times without error if a reward is granted.
By default, the tasks in Avida are all logic operations that act upon the inputs in a bitwise fashion.
myxo.css.msu.edu /papers/nature2003/glossary.html   (1926 words)

  
 Operations Bits
Since the bitwise operators manipulate the bits within an integer, it is important to understand what effects such manipulations may have on a value.
Notice that the unsigned shift right operator was not used for d, since the state of the sign bit after the AND was known.
All of the binary bitwise operators have a shorthand form similar to that of the algebraic operators, which combines the assignment with the bitwise operation.
home.olemiss.edu /~virjay/a.html   (2229 words)

  
 Logical Expressions, Inc.   (Site not responding. Last check: 2007-10-12)
The Not operator is a special case because it is a unary operator, which means it acts upon a single operand.
When you use the Not operator on the integer variable, the result is an integer with the last bit set to 0 and the remaining bits set to 1.
This operation is frequently called "masking," which accounts for the naming of the VB constants for the Shift argument.
www.logicalexpressions.com /vbtip02.htm   (2951 words)

  
 [No title]
After the arithmetic operation is complete, the new value of the atom will be compared to the compare_rhs value and return a value indicating the result of that comparison.
If the result of the comparison operation is zero (equal) and the exec_func parameter is non-NULL then the specified exec_function is called with the arguments arg and the new value of the atom.
After that operation is complete, a comparison of the new value of the atom and compare_rhs value will be performed.
www.cognitus.net /html/howto/sync_int.h   (3569 words)

  
 Symposium: Bitwise Operations   (Site not responding. Last check: 2007-10-12)
Most operations in programming happen on chunks of memory that are a byte or larger.
One of the primary uses for bitwise operators is to implement "flags".
Bitwise operations can allow some cool things, but make sure you understand their limitations.
www.divnull.com /lward/personal/writing/bitwise.html   (1671 words)

  
 Bitwise Operators
We must use the bitwise operators to act at the bit level.
Caution: Bitwise operations may be machine-dependent, to an extent, because they rely on the way that the bits are arranged in memory.
Here is a sample program that performs these operations on these two numbers.
www.cs.fsu.edu /~myers/cop3330/notes/bitwise.html   (570 words)

  
 'e' Basics Part-I
Bit wise operators work at bit level, so they are called bit wise operators.
a = 10101010 b = 1010101 Bitwise negation a is :1010101 Bitwise AND of a with b is :0 Bitwise OR of a with b is :11111111 Bitwise XOR of a with b is :11111111 Left shift a by 2 bits is :10101000 Right shift b by 2 bits is :10101
Boolean operators are used in condition checking as in other languages.
www.asic-world.com /specman/e_basics2.html   (385 words)

  
 AbleRd (Agent Building and Learning Environment (ABLE))   (Site not responding. Last check: 2007-10-12)
Bitwise NOT: complement the current value of this data object.
Bitwise OR the current value of this data object with the current value of theRhs.
Bitwise Shift Left the current value of this data object by the current value of theRhs.
www.research.ibm.com /able/doc/reference/com/ibm/able/data/AbleRd.html   (1986 words)

  
 5 Bit Manipulation and Character I/O   (Site not responding. Last check: 2007-10-12)
Like the other data manipulation operations (e.g., add, sub, smul, sdiv, etc.), there are two instruction formats for each of the bitwise operations.
Like the other data manipulation operations, there are separate bitwise operations that update the condition code register after they perform the specified operation.
The shift operations provide a mechanism for moving every bit in a value to the left or right by a specified number of positions.
www.cs.unm.edu /~maccabe/classes/341/labman/node5.html   (1120 words)

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