XMVectorReciprocalSqrt function (directxmath.h)
Computes the per-component reciprocal square root of a vector.
Syntax
XMVECTOR XM_CALLCONV XMVectorReciprocalSqrt(
[in] FXMVECTOR V
) noexcept;
Parameters
[in] V
Vector whose reciprocal square root is computed.
Return value
Returns a vector. Each component is the reciprocal square-root of the corresponding component of V.
Remarks
The reciprocal square-root operation handles special input values as follows.
| Input Value | Return Value |
|---|---|
| +Infinity | 0* |
| +0.0f | +Infinity* |
| -0.0f | -Infinity* |
| < 0.0f | QNaN |
- Note that due to implementation details, VMX128 returns QNaN in all special cases.
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
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | directxmath.h (include DirectXMath.h) |