**CIGAL Reference Manual, Chapter 6 (RealTime): r_fft**
===== r_fft -- Perform a 1-D FFT on an array of values =====
** usage:  r_fft   opflg eflag ltime src dst [nvals flg]**

R_FFT is a REALTIME operator.

Perform an FFT on some or all of the values in the SRC array; put the result in the DST array.
If NVALS is missing, all values in SRC will be used.\\

If FLG & 1, sum values prior to the current SRC pointer location.\\
If FLG & 2, don't include the current SRC pointer location.

**See Also:**\\

[[jvs:cigal|CIGAL Home]], 
[[jvs:cigal:manual|CIGAL Manual]], 
[[jvs:cigal:manual:chapter6|RealTime List]], 
[[jvs:cigal:manual:help|Manual Help]]