FFT Configuration Parameters - 2025.2 English

For the FFT/iFFT library element, use the following list of configurable parameters and default values.

Table 6 FFT Configuration Parameters

Name	Type	Default	Description
DATA_TYPE	typename	cint16	Data Type.
TWIDDLE_TYPE	typename	cint16	Twiddle Type.
POINT_SIZE	unsigned	1024	FFT point size.
SHIFT	unsigned	17	See Common Configuration Parameters
FFT_NIFFT	unsigned	0	Forward (1) or reverse (0) transform.
WINDOW_VSIZE	unsigned	1024	Input/Output window size. By default, set to: $(POINT_SIZE).
CASC_LEN	unsigned	1	Cascade length.
DYN_PT_SIZE	unsigned	0	Enable (1) Dynamic Point size feature.
API_IO	unsigned	0	Graph’s port API. 0: window 1: stream
PARALLEL_POWER	unsigned	0	Parallelism, controlling Super Sample Rate operation.
NITER	unsigned	4	See Common Configuration Parameters
DIFF_TOLERANCE	unsigned	0	See Common Configuration Parameters
STIM_TYPE	unsigned	0	See Common Configuration Parameters
ROUND_MODE	unsigned	0	See Common Configuration Parameters
SAT_MODE	unsigned	1	See Common Configuration Parameters