Top "Carryflag" questions

Assembly ADC (Add with carry) to C++

There is an x86 assembly instruction ADC. I've found this means "Add with carry". What does this mean/do? How …

c++ assembly x86 bigint carryflag

Assembly - Carry flag VS overflow flag

I have the next code: mov al, -5 add al, 132 add al, 1 As I check it, the overflow flag and …

assembly x86 carryflag eflags signed-overflow

Overflow and Carry flags on Z80

I have gotten round to implementing the ADD A,r set of opcodes on my Z80 core. I had a …

math assembly z80 carryflag signed-overflow

Efficient 128-bit addition using carry flag

I'm using a 128 bit integer counter in the very inner loops of my C++ code. (Irrelevant background: The actual application …

c++ gcc assembly bigint carryflag

carry/overflow & subtraction in x86

I'm trying to wrap my head around overflow & carry flags in x86. As I understand it, for addition of …

math x86 overflow twos-complement carryflag