RtlGetEnabledExtendedFeatures - NtDoc

#ifndef _NTRTL_H

/**
 * The RtlGetEnabledExtendedFeatures routine returns a mask of extended processor features that are enabled by the system.
 *
 * @param FeatureMask A 64-bit feature mask. This parameter indicates a set of extended processor features for which the caller requests information about whether the features are enabled.
 * @return A 64-bitmask of enabled extended processor features. The routine calculates this mask as the intersection (bitwise AND) between all enabled features and the value of the FeatureMask parameter.
 * @sa https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/ntddk/nf-ntddk-rtlgetenabledextendedfeatures
 */
NTSYSAPI
ULONG64
NTAPI
RtlGetEnabledExtendedFeatures(
    _In_ ULONG64 FeatureMask
    );

#endif
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