fzoepffel opened a new pull request, #1983:
URL: https://github.com/apache/systemds/pull/1983
## Overview
Java functions for FFT and IFFT for one and 2dimensional inputs were added
and integrated into DML. The IFFT and FFT DML functions both are currently
only implemented for real inputs. An exemplory dml script can be found in
tmp/test.dml.
## Testing
Tests were added, as well. One test is meant to compare the correctness and
speed of the FFT implementation with the corresponding numpy implementation. To
run this test (to be found in FourierTestWithFiles.java) run the python script
in FourierTestData.py and copy the generated files to the root of the project.
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