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exp (sm4 - asm)

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Component-wise 2exponent.

exp[_sat] dest[.mask], [-]src0[_abs][.swizzle]
Item Description
dest
 [in] The result of the operation.
dest = 2 ^ src0
src0
 [in] The exponent.

Remarks

This instruction follows limit theory. The maximum relative error is 2-21.

The following table shows the results obtained when executing the instruction with various classes of numbers, assuming that neither overflow or underflow occurs. In this table F means finite-real number.

src -inf -F -denorm -0 +0 +denorm +F +inf NaN
dest 0 +F 1 1 1 1 +F +inf 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

Shader Model 4 Assembly (DirectX HLSL)