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round

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Rounds the specified value to the nearest integer. Halfway cases are rounded to the nearest even.

ret round(x)

Parameters

Item Description
x
 [in] The specified value.

Return Value

The x parameter, rounded to the nearest integer within a floating-point type.

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) yes (vs_1_1 only)

Requirements

Requirement Value
Header
Corecrt_math.h

See also

Intrinsic Functions (DirectX HLSL)