dx-graphics-hlsl-round.md

title	description	ms.assetid	keywords	topic_type	api_name	api_location	api_type	ms.topic	ms.date
round (Corecrt\_math.h)	Rounds the specified value to the nearest integer.	258ce717-dca1-4ed2-ad98-1ecfdb58f939	round HLSL	apiref	round	corecrt_math.h	HeaderDef	reference	05/31/2018

round

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)