<!--
{
  "documentType" : "article",
  "framework" : "Accelerate",
  "identifier" : "/documentation/Accelerate/availability-flags",
  "metadataVersion" : "0.1.0",
  "role" : "collectionGroup",
  "title" : "Availability Flags"
}
-->

# Availability Flags

Obtain the availability of particular vImage features.

## Topics

### Constants

[`var VIMAGE_AFFINETRANSFORM_DOUBLE_IS_AVAILABLE: Int32`](/documentation/Accelerate/VIMAGE_AFFINETRANSFORM_DOUBLE_IS_AVAILABLE)

Defined as `1` if double-precision affine transforms and related functions are supported on the current architecture and in the current SDK, else undefined. See [`vImage_AffineTransform_Double`](/documentation/Accelerate/vImage_AffineTransform_Double) for more information.

[`var VIMAGE_CGAFFINETRANSFORM_IS_AVAILABLE: Int32`](/documentation/Accelerate/VIMAGE_CGAFFINETRANSFORM_IS_AVAILABLE)

Defined as `1` if Core Graphics affine transforms and related functions are supported on the current architecture and in the current SDK, else undefined. See [`vImage_CGAffineTransform`](/documentation/Accelerate/vImage_CGAffineTransform) for more information.


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)