Also known as excess-K, excess-N, excess code, biased representation
method for signed number representation
Article · 中文
在计算机科学中,移码(英語:Offset binary)是一种将全0码映射为最小负值、全1码映射为最大正值的编码方案。移码没有标准,但通常对于n位二进制数,偏移量K = 2n−1——这使得真值0的编码的最高位为1、其余位均为0,相当于补码表示的最高位(符号位)取反;另外,移码在逻辑比较操作中可以得到和真值比较相同的结果,补码则当且仅当符号相同时逻辑比较操作的结果和真值比较相同,否则比较结果将颠倒(负值比正值大)。
Abstract from DBpedia / Wikipedia · CC BY-SA
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