31.7.2 mips_fft16_setup – Function Deprecated
Description
Calculates the twiddle factors need to compute an FFT of size N. The twiddle factors are used by the mips_fft16() function. The number of samples to be processed is specified by the parameter log2N: N = 2log2N.
Include
dsplib_dsp.h
Prototype
void
mips_fft16_setup
(
int16c *twiddles,
int log2N
);
Argument
twiddles: Output array containing N 16-bit complex twiddle factors.
log2N: Logarithm base 2 of the number of samples: N = 2log2N.
Return Value
None.
Remarks
This function requires floating-point support.
Notes
This function is implemented in C.