modf

Splits the value x into fractional and integer parts, each of which has the same sign as x.

ret modf(x, out ip)

Parameters

Item Description
x
[in] The x input value.
ip
[out] The integer portion of x.

Return Value

The signed-fractional portion of x.

Type Description

Name In/Out Template Type Component Type Size
x in scalar, vector, or matrix float, int any
ip out same as input x float, int same dimension(s) as input x
ret out same as input x float, int 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)