Intel 253666-024US Manuel D’Utilisation

3-106 Vol. 2A

CLC—Clear Carry Flag

INSTRUCTION SET REFERENCE, A-M

CLC—Clear Carry Flag

Description

Clears the CF flag in the EFLAGS register. Operation is the same in all non-64-bit
modes and 64-bit mode.

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.

Opcode

Instruction

64-Bit

Mode

Compat/

Leg Mode

Description

CLC

Valid

Clear CF flag.