x86 Instruction Set Reference
CMC
Complement Carry Flag
| Opcode | Mnemonic | Description |
|---|---|---|
F5 |
CMC |
Complement CF flag. |
| Description |
|---|
|
Complements the CF flag in the EFLAGS register. |
| Operation |
|---|
CF = ~CF; |
| Flags affected |
|---|
|
The CF flag contains the complement of its original value. The OF, ZF, SF, AF, and PF flags are unaffected. |
| Exceptions |
|---|
| None. |