Returns the length of the specified floating-point vector.

ret length(x)


Item Description
The specified floating-point vector.

Return Value

A floating-point scalar that represents the length of the x parameter.

Type Description

Name Template Type Component Type Size
x vector float any
ret scalar float 1

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)

See also

Intrinsic Functions (DirectX HLSL)