clc

Clear Carry Flag

CLC

Sets the CF flag to 0.

Pseudocode Operation

CF ← 0

Encoding

Binary Layout

F8

+0

 

Format Legacy

Opcode F8

Extension Base

Operands

Related

More in Base

Reference

View in Intel® 64 and IA-32 Architectures SDM ↗ Intel® SDM

Instruction Forms

Opcode	Instruction	Op/En	64/32-bit Mode	CPUID	Description
F8	CLC	ZO	Valid Valid		Clear CF flag.

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. CLC-Clear Carry Flag Vol. 2A 3-140