Add PyTorch 1.7 FFT compatibility

mmuckley / torchkbnufft

A high-level, easy-to-deploy non-uniform Fast Fourier Transform in PyTorch.

https://torchkbnufft.readthedocs.io/

MIT License

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Closed mmuckley closed 3 years ago

mmuckley commented 3 years ago

This PR adds compatibility for the new PyTorch 1.7 complex number FFT. It handles it just by converting the real tensor to complex and back.