将 ADC(带进位相加)组装到 C++

2021-12-18 00:00:00 assembly c++ bigint x86 carryflag

有一个 x86 汇编指令 ADC.我发现这意味着带进位相加".这是什么意思/做什么?如何在 C++ 中实现这条指令的行为?

There is an x86 assembly instruction ADC. I've found this means "Add with carry". What does this mean/do? How would one implement the behavior of this instruction in C++?

信息:
在 Windows 上编译.我使用的是 32 位 Windows 安装.我的处理器是 Intel 的 Core 2 Duo.

INFO:
Compiled on Windows. I'm using a 32-bit Windows Installation. My processor is Core 2 Duo from Intel.

推荐答案

ADC 与 ADD 相同,但如果设置了处理器的进位标志,则会增加一个额外的 1.

ADC is the same as ADD but adds an extra 1 if processor's carry flag is set.

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