Masking is the process by which,only required data is retained and the rest is masked (blocked). In C programming language Masking can be done using Bitwise Operators. Most Commonly Used Bitwise Operator is AND (&). It can also be done by OR and XOR Bitwise Operators.
The & operator computes the bitwise logical AND of its integral operands: uint a = 0b_1111_1000; uint b = 0b_1001_1101; uint c = a & b; Console.WriteLine(Convert.ToString(c, toBase: 2)); // Output: // 10011000 For bool operands, the & operator computes the logical AND of its operands. The unary & operator is the address-of operator.
Introduction to Bitwise Operators.2. Types of Bitwise Operators.3. Bitwis AND operator&, is used to mask out bits. OR operator|, is used to reassemble bit fields. XOR operator^, is used to controllably invert bits.
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Bitwise operators make perfect sense working with hex digits, because they operate on the underlying bits of those digits: 0xff0 & 0x0ff == 0x0f0 0xff0 | 0x0ff == 0xfff 0xff0 ^ 0x0ff == 0xf0f You can use these bitwise operators to peel off the hex digits of a number, to print out stuff in hex. int v=1024+15;
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NOTE: The combination of pointers and bit-level operators makes C useful for use expression evaluation of x & 01 to control if; x & 01 masks of 1st bit of x if this
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Left shift operator<<, makes numbers bigger by shifting their bits to higher places. Right shift operator>>, makes numbers smaller by shifting Including these operators in C made it possible to write operating systems and device drivers in C rather than in assembly. All of the bit-manipulation operators require two integer arguments, which we will often view in binary for convenience. It is further convenient for us to divide the operators into two groups: bitwise and bit-shift.
// A more efficient technique is to use right shift.
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Mask String Operators. Operator. Description "?" (question mark) Indicates that something is optional. For example, a mask of "ab?c" indicates that the "b" is optional. This mask matches "abc" or "ac". Use parentheses for grouping.
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Back The AND bitwise operator can be used to mask bits off. We often use the AND bitwise operation to mask off some bits, as a 0 in a certain bit position will
In the next post I’ll explain how you can define new fields for bit masks similar to AnchorStyles.Left in your code. The ^ operator computes the bitwise logical exclusive OR, also known as the bitwise logical XOR, of its integral operands: uint a = 0b_1111_1000; uint b = 0b_0001_1100; uint c = a ^ b; Console.WriteLine(Convert.ToString(c, toBase: 2)); // Output: // 11100100 For bool operands, the ^ operator computes the logical exclusive OR of its operands. Now, let us see an example of toggling a bit i.e.
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