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

Item Description
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
x scalar, vector, or matrix float any
exp same as input x float same dimension(s) as input x
ret same as input x float same dimension(s) as input x

Minimum Shader Model

This function is supported in the following shader models.

Shader Model Supported
Shader Model 2 (DirectX HLSL) and higher shader models yes
Shader Model 1 (DirectX HLSL) yes (vs_1_1 only)

Requirements

Header
Corecrt_math.h

See also

Intrinsic Functions (DirectX HLSL)