Returns the fractional (or decimal) part of x; which is greater than or equal to 0 and less than 1.

Also see trunc.

ret frac(x)


Item Description
[in] The specified value.

Return Value

The fractional part of the x parameter.

Type Description

Name Template Type Component Type Size
x scalar, vector, or matrix float any
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) vs_1_1

See also

Intrinsic Functions (DirectX HLSL)