16.83 MNEG
Multiply-Negate.
This instruction is an alias of MSUB
.
Syntax
MNEG
Wd
, Wn
, Wm
; 32-bit general registers
Equivalent to MSUB
.Wd
, Wn
, Wm
, WZR
MNEG
Xd
, Xn
, Xm
; 64-bit general registers
Equivalent to MSUB
.Xd
, Xn
, Xm
, XZR
Where:
Wd
-
Is the 32-bit name of the general-purpose destination register.
Wn
-
Is the 32-bit name of the first general-purpose source register holding the multiplicand.
Wm
-
Is the 32-bit name of the second general-purpose source register holding the multiplier.
Xd
-
Is the 64-bit name of the general-purpose destination register.
Xn
-
Is the 64-bit name of the first general-purpose source register holding the multiplicand.
Xm
-
Is the 64-bit name of the second general-purpose source register holding the multiplier.
Operation
Multiply-Negate multiplies two register values, negates the product, and writes the result to the destination register.
, where R
d = -(R
n * R
m)
is either R
W
or X
.