最終更新日：2025/11/20

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(computing) The number obtained by complementing every bit of a given number and adding one. A number and its complement add to 2ⁿ, where n is the word size of the machine.

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two's complement

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元となった辞書の項目

two's complement

名詞

(computing) The number obtained by complementing every bit of a given number and adding one. A number and its complement add to 2ⁿ, where n is the word size of the machine.

日本語の意味

二の補数：コンピュータ工学において、与えられた数値の全ビットを反転させた後に1を加えた数。nビットの数値であれば、元の数とその補数の和は2ⁿとなる。

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When storing negative integers, the processor uses two's complement to represent their values efficiently.

Google翻訳 / DeepL翻訳

負の整数を格納する際、プロセッサは値を効率的に表現するために2の補数を使用します。

詳細

意味（1）

(computing) The number obtained by complementing every bit of a given number and adding one. A number and its complement add to 2ⁿ, where n is the word size of the machine.

The two's complement of 0xAAAA is 0x5556 on a 16-bit machine, and 0xFFFF5556 on a 32-bit machine.

Google翻訳 / DeepL翻訳

詳細

意味（2）

(computing) The convention by which bit patterns with high bit 0 represent positive numbers from 0 to 2ⁿ⁻¹-1 directly, while bit patterns with high bit 1 represent negative numbers from -1 to -2ⁿ⁻¹, n being the word size of the machine, and the numeric complement of a number is its two's complement.