In trying to run the example supplied with dsplib_3_1_1_1, I uncovered an error that you should be made aware of it. After untarring the tarball, I tried to run fft_example provided in the examples directory.
From the file fft_example.c in the examples directory:
#include "gen_twiddle_fft16x16.h"
…
main()
{
…
gen_twiddle_fft16x16(w_16x16, N);
..
}
The implementation of gen_twiddle_fft16x16 is included in the examples directory in a file called gen_twiddle_fft16x16.c. I am assuming that you wanted us to use this file since it was included in the examples directory and by virtue of the double quotes (as opposed to <>) in the #include above.
It is my contention that the file gen_twiddle_fft16x16.c in the examples directory is incorrect for little endian machines. I was able to get good results using gen_twiddle_fft16x16.c in packages/ti/dsplib/src/DSP_fft16x16/c64P.
Do you concur? Perhaps you should not provide the twiddle functions in the example directory at all since you include them elsewhere in the dsplib package.
