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.

Jun 2, 2013 · Assume that the value of test is 1 or 0. Here I can implement the following if statement using bitwise operators as below.

Nov 28, 2011 · C# AND assignment operator (&=) with bitwise enums. 0. Bitwise operation in C#. Hot Network Questions

Aug 7, 2010 · 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 …

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.

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 ...

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

Aug 24, 2008 · 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.

Dec 5, 2013 · Bitwise operations are much faster. This is why the compiler will use bitwise operations for you. Actually, I think it will be faster to implement it as: ~i & 1 Similarly, if you look at the assembly code your compiler generates, you may see things like x ^= x instead of x=0. But (I hope) you are not going to use this in your C++ code.

Nov 12, 2010 · The C ! operator is really just shorthand for != 0, so using it seems very close to cheating :). Here's my take just using bitwise operations, assuming a 32-bit two's complement machine with arithmetic right shifts (technically, in C arithmetic right shifts are undefined, but every C compiler I've ever seen on a two's complement machine supports this correctly):