~x contains 31 ones(1’s) and one 0(zero).The binary number representation of x is: This inverted sequence is called the one’s complement of a bit series. In other words, NOT inverts each input bit. NOT ( ~), or sometimes called the bitwise complement operator, is a unary operation that takes a single input and swaps each bit in its binary representation to the opposite value.Īll instances of 0 become 1, and all instances of 1 become 0. It’s also used to clear selected bits of a register in which each bit represents an individual Boolean state. The operation may be used to determine whether a particular bit is set (1) or clear (0). If two input bits are 1, the output is 1.As multiplying anything by 0 results in 0, the AND comparison with any 0 bit will result in 0. It essentially multiplies each bit by the corresponding bit in the other operand. Otherwise, the corresponding result bit is set to 0. If yes, that bit is set to 1 in the answer. For each bit, the operation checks if both bits are 1 across both operands. The operands are converted from their readable form to binary representation. Let’s take a quick look at each of the major Bitwise operators and their uses.Įnjoying the article? Scroll down to sign up for our free, bi-monthly newsletter.ĪND ( &) is a binary operator that compares two operands of equal length. Bitwise operations are incredibly simple and faster than arithmetic operations.They are used to manipulate values for comparisons and calculations.They are directly supported by the processor.The "why" of that is most probably this lists of points, or the same more succinctly expressed as in the answer we're commenting on.Since the directions are opposite, the OP saw a reversal.That digit direction (with bytes as digits), for presentation of a number, is the opposite of the layout in little endian memory.Maybe also: the digit direction used for presentation of a number, is the digit direction used in the OP's presentation of a number. I mention this tautology because you have twice asked about it. The digit direction used for presentation of number, is the digit direction for presentation of a number.Numbers were also read and pronounced that way. Originally that was so also for the complete sequence of digits in a number.Because the West inherited the notation.The direction of digits is the same in Arabic and Western notation.
Re the questions, those are seriously confused.
No, it doesn't, regardless of which of the two questions I linked you refer to as "the article" furthermore the current practice is not the practice used when the notation was developed, which is what matters for the OP's "why". The article you linked clearly states that Arabic numerals are currently read & written left to right.
#Java reverse bits in a byte how to
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#Java reverse bits in a byte code
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