Developer Reference

  • 2021
  • 03/26/2021
  • Public Content
Contents

Function Context Structures

Some Intel IPP functions use special structures to store function-specific (context) information. For example, the
IppsFFTSpec
structure stores twiddle factors and bit reverse indexes needed in the fast Fourier transform.
Two different kinds of structures are used:
  • specification structures that are not modified during function operation; they have the suffix
    Spec
    in their names
  • state structures that are modified during operation; they have the suffix
    State
    in their names.
The function context interpretation is processor dependent. Therefore, these context-related structures are not defined in the public headers, and their fields are not accessible. Intel IPP provides no option of modifying these structures or creating a function context as an automatic variable.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.