fft2

[lpatiny]

• feat: add reimArrayFFT
• feat: add inPlace for reimArrayFFT and reimFFT

[lpatiny]

Here are the results of the benchmark. reimArrayFFT is 2 times after that the equivalent reimFFT on the same number of spectra. This test case was on 10 spectra and we expect a better result for NMR 2D processing.

reimFFT (loop): 5.008s
  3060 total FFTs, 10 spectra × 306 rounds
  1.637 ms per FFT

reimFFT inPlace (loop): 5.007s
  3140 total FFTs, 10 spectra × 314 rounds
  1.595 ms per FFT

reimArrayFFT: 5.006s
  6090 total FFTs, 10 spectra × 609 rounds
  0.822 ms per FFT

reimArrayFFT inPlace: 5.002s
  6510 total FFTs, 10 spectra × 651 rounds
  0.768 ms per FFT

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.92%. Comparing base (b829991) to head (6973469).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #344      +/-   ##
==========================================
+ Coverage   96.88%   96.92%   +0.03%     
==========================================
  Files         190      192       +2     
  Lines        3601     3641      +40     
  Branches      910      922      +12     
==========================================
+ Hits         3489     3529      +40     
  Misses        108      108              
  Partials        4        4              

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