Intel IPP status 50 (ippStsUnknownFeature): meaning and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: IPP does not recognize at least one requested CPU feature selector.

Could be also:
Constant	Type	OS
ERROR_NOT_SUPPORTED	Win32 error	Windows
KERN_CODESIGN_ERROR	Kern return	Mac
ENOCSI	errno	Linux
ENETDOWN	errno	Mac
EBADE	errno	Solaris
PHASE1_INITIALIZATION_FAILED	BugCheck Code	Windows

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ippStsFeatureNotSupported	ippStsFeaturesCombination

ippStsUnknownFeature

This warning indicates a bad or version-mismatched feature identifier. The feature selection API understood that a feature mask was supplied, but at least one bit or selector is not known to the linked IPP runtime.

It often points to headers newer than the runtime library, stale constants, or an application-defined mask that was not normalized before calling IPP.

Diagnostic focus

Check header and runtime library versions together.
Print the unknown feature mask in hexadecimal and decoded symbolic form.
Handle this separately from unsupported-known features, which use ippStsFeatureNotSupported.

IPP CPU feature functions · Intel IPP Error Reporting

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