The inverse backward FFT from complex to complex.

Class
TVec

Calculates the inverse (backward) Fast Fourier Transformation (FFT) from complex to complex for all calling vector elements in-place. If the NoScale parameter is true, then no scaling is performed for the calling vector. The results can be erroneous if overflow or underflow occurs.

See Also
FFT
TDenseMtxVec.FFT

Example 1

       var a,b: TVec;
       begin
        CreateIt(a,b);
        try
          a.SetIt(True,[1,2,3,4]);
          b.IFFT(a,True);
        finally
          FreeIt(a,b);
        end;
       end;

---

Declaration

Function IFFT(Vec: TVec; NoScale: boolean = False): TVec;

Description

Calculate the inverse FFT from all Vec elements and store the results in the calling vector. If the NoScale parameter is true then no scaling is performed for the calling vector. Vec Length must not be the power of two. Length and Complex properties of the calling vector are set implicitly to match Vec vector.

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