Developer Reference

  • 2021.1
  • 12/04/2020
  • Public Content
Contents

One-dimensional Real-to-half-complex/Half-complex-to-real FFTs

Half-complex representation of a conjugate-even symmetric vector of size
N
in a real array of the same size
N
consists of
N
/2+1 real parts of the elements of the vector followed by non-zero imaginary parts in the reverse order. Because the
Intel® oneAPI Math Kernel Library
FFT interface does not currently support this representation, all wrappers of this kind are empty and do nothing.
Nevertheless, you can perform one-dimensional real-to-complex and complex-to-real transforms using
rfftwnd
functions with
rank
=1.

Product and Performance Information

1

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