# CMC
# Complement Carry Flag
| Opcode | Mnemonic | Description |
|---|---|---|
| F5 | CMC | Complement CF flag. |
# Description
Complements the CF flag in the EFLAGS register.
# Operation
CF = ~CF;
1
2
2
# Flags affected
The CF flag contains the complement of its original value. The OF, ZF, SF, AF, and PF flags are unaffected.
# Exceptions
None.