# CLC — Clear Carry Flag

Opcode | Instruction | Op/En | 64-bit Mode | Compat/Leg Mode | Description
--- | --- | --- | --- | --- | ---
F8 | CLC | ZO | Valid | Valid | Clear CF flag.

## Instruction Operand Encoding ¶

Op/En | Operand 1 | Operand 2 | Operand 3 | Operand 4
--- | --- | --- | --- | ---
ZO | N/A | N/A | N/A | N/A

## Description ¶

Clears the CF flag in the EFLAGS register. Operation is the same in all modes.

## Operation ¶

    CF := 0;

## Flags Affected ¶

The CF flag is set to 0. The OF, ZF, SF, AF, and PF flags are unaffected.

## Exceptions (All Operating Modes) ¶

#UD If the LOCK prefix is used.