Performs the same operation as the
v function but uses a temporary buffer to hold intermediate results for improved performance. Computes an in-place single-precision complex discrete Fourier transform of the input/output vector signal, either from the time domain to the frequency domain (forward) or from the frequency domain to the time domain (inverse).
- iOS 4.0+
- macOS 10.0+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
Points to a structure initialized by a prior call to the FFT setup data function,
v. The value supplied as parameter
DSP _create _fftsetup
Log2nof the earlier call to the setup function must equal or exceed the value supplied as parameter
Log2Nof this transform function.
A complex input/output vector.
Stride between elements in
C. The value of
ICshould be 1 for best performance.
A temporary vector used for storing interim results. The minimum size of temporary memory for each part (real and imaginary) is the lesser of the size of
Nelements or 16,384 bytes. For best performance, the buffer addresses should be 16-byte aligned or better.
The base 2 exponent of the number of elements to process. For example, to process 1024 elements, specify