Assembler:Commands:NEG

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command neg operand

The neg instruction performs a Two's Complement Negation.

Other ways to understand:

- Operand subtracted from itself twice

- Operand subtracted from '0'

- The operand multiplied by '-1'

- Positive become negative

- Negative become Positive

1 - 1 = 0
0 - 1 = -1


Operand = -Operand


Replaces the value of operand (the destination operand) with its two's complement. (This operation is equivalent to subtracting the operand from 0.) The destination operand is located in a general-purpose register or a memory location.

x86.renejeschke.de/html/file_module_x86_id_216.html


Command Parameters

Parameter Description
operand The operand to perform a Negate operation on


Examples

neg al
neg ah
neg ax
neg eax
neg rax
neg [edx+110]
neg [rdx+10]
neg [00123abc]
neg [UserDefinedSymbol]


See also


External links