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A bitwise operator treats its operands as a
{vector} of {bits} rather than a single number. {Boolean}
bitwise operators combine bit N of each operand using a
{Boolean} function ({NOT}, {AND}, {OR}, {XOR}) to produce bit
N of the result.

For example, a bitwise AND operator ("&" in {C}) would
evaluate 13 & 9 as (binary) 1101 & 1001 = 1001 = 9, whereas,
the logical AND, ({C} "&&") would evaluate 13 && 9 as TRUE &&
TRUE = TRUE = 1.

In some languages, e.g. {Acorn}'s {BASIC V}, the same operators
are used for both bitwise and logical operations. This
usually works except when applying NOT to a value x which is
neither 0 (false) nor -1 (true), in which case both x and (NOT
x) will be non-zero and thus treated as TRUE.

Other operations at the bit level, which are not normally
described as "bitwise" include shift and rotate.

(1995-05-12)


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  • Explanation of Bitwise NOT Operator - Stack Overflow
    Bitwise works on the binary level, so 0 on binary would seen as 0000_0000, and (in two's complemented) -1 is 1111_1111, this not 0 flips all the bits to 1s, thus alters 0 into -1 But in an unsigned type (like C# uint) it'll be the max value possible
  • boolean - What are bitwise operators? - Stack Overflow
    In digital computer programming, a bitwise operation operates on one or more bit patterns or binary numerals at the level of their individual bits It is a fast, primitive action directly supported by the processor, and is used to manipulate values for comparisons and calculations operations: bitwise AND bitwise OR bitwise NOT bitwise XOR
  • What are bitwise shift (bit-shift) operators and how do they work?
    The Bitwise operators are used to perform operations a bit-level or to manipulate bits in different ways The bitwise operations are found to be much faster and are some times used to improve the efficiency of a program Basically, Bitwise operators can be applied to the integer types: long, int, short, char and byte Bitwise Shift Operators
  • Understanding the bitwise AND Operator - Stack Overflow
    The Bitwise AND Operator Bitwise ANDing is frequently used for masking operations That is, this operator can be used easily to set specific bits of a data item to 0 For example, the statement w3 = w1 3; assigns to w3 the value of w1 bitwise ANDed with the constant 3
  • python - Bitwise operation and usage - Stack Overflow
    Bitwise operators are operators that work on multi-bit values, but conceptually one bit at a time AND is 1 only if both of its inputs are 1, otherwise it's 0 OR is 1 if one or both of its inputs are 1, otherwise it's 0
  • else if using bitwise operators - Stack Overflow
    Assume that the value of test is 1 or 0 Here I can implement the following if statement using bitwise operators as below
  • Using bitwise operators for Booleans in C++ - Stack Overflow
    Using bitwise operations for bool helps save unnecessary branch prediction logic by the processor, resulting from a 'cmp' instruction brought in by logical operations Replacing the logical with bitwise operations (where all operands are bool) generates more efficient code offering the same result
  • How does condition statement work with bit-wise operators?
    I tried to understand how if condition work with bitwise operators A way to check if a number is even or odd can be done by: #include lt;iostream gt; #include lt;string gt; using namespace std;
  • What is the difference between Bitwise AND and LOGICAL AND
    Bitwise AND will affect its operators on the bit-level i e looping and doing logical AND operation on every bit On the other hand, Logical AND will take 2 boolean operators to check their rightness (as a whole) and decide upon (notice that bool in C# is 2 bytes long)
  • Real world use cases of bitwise operators - Stack Overflow
    Bitwise operators are useful for looping arrays which length is power of 2 As many people mentioned, bitwise operators are extremely useful and are used in Flags, Graphics, Networking, Encryption Not only that, but they are extremely fast My personal favorite use is to loop an array without conditionals





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