not

8086 and later

One's Complement Negation

NEG replaces the contents of its operand by the two's complement negation (invert all the bits and then add one) of the original value. NOT, similarly, performs one's complement (inverts all the bits).

Forms

Every form of not the assembler accepts.

Form	Since	Notes
not r/m8	8086	lock
not r/m16	8086	lock
not r/m32	386	lock
not r/m64	x86-64	locklong
not [reg8], r/m8	x86-64	apxlocklong
not [reg16], r/m16	x86-64	apxlocklong
not [reg32], r/m32	x86-64	apxlocklong
not [reg64], r/m64	x86-64	apxlocklong
not kreg8, kreg8	recent	avx512dq
not kreg16, kreg16	recent	avx512f
not kreg32, kreg32	recent	avx512bw
not kreg64, kreg64	recent	avx512bw