# Status Checking Functions

All of the descriptor manipulation, FFT computation, and descriptor configuration functions return an integer value denoting the status of the operation. Two functions serve to check the status. The first function is a logical function that checks if the status reflects an error of a predefined class, and the second is an error message function that returns a character string.

- ErrorClass
  Checks if the status reflects an error of a predefined class.
- ErrorMessage
  Generates an error message.

Parent topic: FFT Functions