Windows Dev Center

XMConvertFloatToHalfStream
XMConvertHalfToFloatStream
XMMatrixDecompose
XMPlaneTransformStream
XMVector2TransformCoordStream
XMVector2TransformNormalStream
XMVector2TransformStream
XMVector3ProjectStream
XMVector3TransformCoordStream
XMVector3TransformNormalStream
XMVector3TransformStream
XMVector3UnprojectStream
XMVector4TransformStream
Expand Minimize

XMVectorTruncate method

Rounds each component of a vector to the nearest integer value in the direction of zero.

Syntax


XMVECTOR XMVectorTruncate(
  [in] XMVECTOR V
);

Parameters

V [in]

Vector whose components are to be truncated.

Return value

Returns a vector whose components are rounded to the nearest integer value in the direction of zero.

Remarks

The return value is computed based on the following logic, which preserves special values (INF,+INF,NaN,-NaN).



Result[0] = (fabsf(V[0]) < 8388608.0f) ? ((float)((int32_t)V[0])) : V[0];
Result[1] = (fabsf(V[1]) < 8388608.0f) ? ((float)((int32_t)V[1])) : V[1];
Result[2] = (fabsf(V[2]) < 8388608.0f) ? ((float)((int32_t)V[2])) : V[2];
Result[3] = (fabsf(V[3]) < 8388608.0f) ? ((float)((int32_t)V[3])) : V[3];
    

Platform Requirements

Microsoft Visual Studio 2010 or Microsoft Visual Studio 2012 with the Windows SDK for Windows 8. Supported for Win32 desktop apps, Windows Store apps, and Windows Phone 8 apps.

Requirements

Namespace

Use DirectX.

Header

DirectXMath.h

 

 

Community Additions

ADD
Show:
© 2015 Microsoft