jessicapriebe commented on code in PR #1983:
URL: https://github.com/apache/systemds/pull/1983#discussion_r1460441756
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src/main/java/org/apache/sysds/runtime/matrix/data/LibMatrixFourier.java:
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@@ -0,0 +1,236 @@
+package org.apache.sysds.runtime.matrix.data;
Review Comment:
resolved
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src/main/java/org/apache/sysds/runtime/matrix/data/LibMatrixFourier.java:
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@@ -0,0 +1,236 @@
+package org.apache.sysds.runtime.matrix.data;
+
+import org.apache.commons.math3.util.FastMath;
+import java.util.Arrays;
+
+public class LibMatrixFourier {
+
+ /**
+ * Function to perform Fast Fourier Transformation
+ */
+
+ public static MatrixBlock[] fft(MatrixBlock re, MatrixBlock im){
+
+ int rows = re.getNumRows();
+ int cols = re.getNumColumns();
+
+ double[][][] in = new double[2][rows][cols];
+ in[0] = convertToArray(re);
+ in[1] = convertToArray(im);
Review Comment:
resolved
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