mul (sm4 - asm)

Component-wise multiply.

mul[_sat] dest[.mask], [-]src0[_abs][.swizzle], [-]src1[_abs][.swizzle]

Item	Description
dest	[in] The result of the operation. dest = src0 * src1
src0	[in] The multiplicand.
src1	[in] The multiplier.

Remarks

The following table shows the results obtained when executing the instruction with various classes of numbers, assuming that neither overflow or underflow occurs.

F means finite-real number.

src0 src1 ->	-inf	-F	-1.0	-denorm	-0	+0	denorm	+1.0	+F	+inf	NaN
-inf	+inf	+inf	+inf	NaN	NaN	NaN	NaN	-inf	-inf	-inf	NaN
-F	+inf	+F	-src0	+0	+0	-0	-0	src0	-F	-inf	NaN
-1	+inf	-src1	+1.0	+0	+0	-0	-0	-1.0	-src1	-inf	NaN
-denorm	NaN	+0	+0	+0	+0	-0	-0	-0	-0	NaN	NaN
-0	NaN	+0	+0	+0	+0	-0	-0	-0	-0	NaN	NaN
+0	iNaN	-0	-0	-0	-0	+0	+0	+0	+0	NaN	NaN
+denorm	NaN	-0	-0	-0	-0	+0	+0	+0	+0	NaN	NaN
+1.0	-inf	src1	-1.0	-0	-0	+0	+0	+1.0	src1	+inf	NaN
+F	-inf	-F	-src0	-0	-0	+0	+0	src0	+F	+inf	NaN
+inf	-inf	-inf	-inf	NaN	NaN	NaN	NaN	+inf	+inf	+inf	NaN
NaN	NaN	NaN	NaN	NaN	NaN	NaN	NaN	NaN	NaN	NaN	NaN

This instruction applies to the following shader stages:

Vertex Shader	Geometry Shader	Pixel Shader
x	x	x

Minimum Shader Model

This function is supported in the following shader models.

Shader Model	Supported
Shader Model 5	yes
Shader Model 4.1	yes
Shader Model 4	yes
Shader Model 3 (DirectX HLSL)	no
Shader Model 2 (DirectX HLSL)	no
Shader Model 1 (DirectX HLSL)	no

Related topics

Shader Model 4 Assembly (DirectX HLSL)