我们如何使用添加32位运算两个64位编号？

How do we add two 64 bit numbers using 32 bit arithmetic??

推荐答案

添加至少显著字节第一，保持进位。添加最显著字节考虑进位LSB的：

Add the least significant bytes first, keep the carry. Add the most significant bytes considering the carry from LSBs:

; x86 assembly, Intel syntax
; adds ecx:ebx to edx:eax
add eax, ebx
adc edx, ecx