Merge pull request #956 from rca22/master

cdrnet · web-flow · commit dbcd7a91a43a · 2025-03-02T09:18:17.000+01:00
Fix initialisation bug in sparse matrix DoTransposeThisAndMultiply operation
diff --git a/src/Numerics/LinearAlgebra/Double/SparseMatrix.cs b/src/Numerics/LinearAlgebra/Double/SparseMatrix.cs
@@ -1162,6 +1162,7 @@ protected override void DoTransposeAndMultiply(Matrix<double> other, Matrix<doub
         /// <param name="result">The result of the multiplication.</param>
         protected override void DoTransposeThisAndMultiply(Vector<double> rightSide, Vector<double> result)
         {
+            result.Clear();
             var rowPointers = _storage.RowPointers;
             var columnIndices = _storage.ColumnIndices;
             var values = _storage.Values;

Original file line number	Diff line number	Diff line change
`@@ -1162,6 +1162,7 @@ protected override void DoTransposeAndMultiply(Matrix<double> other, Matrix<doub`
`1162`	`1162`	`/// <param name="result">The result of the multiplication.</param>`
`1163`	`1163`	`protected override void DoTransposeThisAndMultiply(Vector<double> rightSide, Vector<double> result)`
`1164`	`1164`	`{`
	`1165`	`+ result.Clear();`
`1165`	`1166`	`var rowPointers = _storage.RowPointers;`
`1166`	`1167`	`var columnIndices = _storage.ColumnIndices;`
`1167`	`1168`	`var values = _storage.Values;`