ldexp

Returns the result of multiplying the specified value by two, raised to the power of the specified exponent.

ret ldexp(x, exp)

 

This function uses the following formula: x * 2exp

Parameters

ItemDescription

x

[in] The specified value.

exp

[in] The specified exponent.

 

Return Value

The result of multiplying the x parameter by two, raised to the power of the exp parameter.

Type Description

Name Template Type Component Type Size
xscalar, vector, or matrix float any
expsame as input x float same dimension(s) as input x
retsame as input x float same dimension(s) as input x

 

Minimum Shader Model

This function is supported in the following shader models.

Shader ModelSupported
Shader Model 2 (DirectX HLSL) and higher shader modelsyes
Shader Model 1 (DirectX HLSL) yes (vs_1_1 only)

 

See also

Intrinsic Functions (DirectX HLSL)

 

 

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