Descriptor Manipulation Functions

There are four functions in this category: create a descriptor, commit a descriptor, copy a descriptor, and free a descriptor.

• DftiCreateDescriptor
  Allocates the descriptor data structure and initializes it with default configuration values.
• DftiCommitDescriptor
  Performs all initialization for the actual FFT computation.
• DftiFreeDescriptor
  Frees the memory allocated for a descriptor.
• DftiCopyDescriptor
  Makes a copy of an existing descriptor.