The radix 2^51 trick

The radix 2^51 trick

摘要

Faster addition and subtraction on modern CPUs Do you remember how to do long addition on paper? ¹¹ ¹ 6876 + 3406 ------ 10282 Starting from the “ones” position, we add 6 + 6 = 12, write down a 2 and…