# Coverage details for edu.uci.ics.jung.algorithms.RealMatrixElementOperations

Line | Hits | Source
--- | --- | ---
1 |  | `/*`
2 |  | `* Copyright (c) 2003, the JUNG Project and the Regents of the University`
3 |  | `* of California`
4 |  | `* All rights reserved.`
5 |  | `*`
6 |  | `* This software is open-source under the BSD license; see either`
7 |  | `* "license.txt" or`
8 |  | `* http://jung.sourceforge.net/license.txt for a description.`
9 |  | `*/`
10 |  | `package edu.uci.ics.jung.algorithms;`
11 |  | ``
12 |  | `import edu.uci.ics.jung.algorithms.MatrixElementOperations;`
13 |  | `import edu.uci.ics.jung.graph.Edge;`
14 |  | `import edu.uci.ics.jung.utils.MutableDouble;`
15 |  | `import edu.uci.ics.jung.utils.UserData;`
16 |  | ``
17 |  | `/**`
18 |  | `* Implements the basic matrix operations on double-precision values. Assumes`
19 |  | `* that the edges have a MutableDouble value.`
20 |  | `*`
21 |  | `* @author Joshua O'Madadhain`
22 |  | `*/`
23 |  | `public class RealMatrixElementOperations implements MatrixElementOperations`
24 |  | `{`
25 |  | `private String EDGE_KEY;`
26 |  | ``
27 |  | `public RealMatrixElementOperations(String edge_key)`
28 | 3 | `{`
29 | 3 | `EDGE_KEY = edge_key;`
30 | 3 | `}`
31 |  | ``
32 |  | `/**`
33 |  | `* @see MatrixElementOperations#mergePaths(Edge, Object)`
34 |  | `*/`
35 |  | `public void mergePaths(Edge e, Object pathData)`
36 |  | `{`
37 | 21 | `MutableDouble pd = (MutableDouble)pathData;`
38 | 21 | `MutableDouble ed = (MutableDouble)e.getUserDatum(EDGE_KEY);`
39 | 21 | `if (ed == null)`
40 | 18 | `e.addUserDatum(EDGE_KEY, pd, UserData.SHARED);`
41 |  | `else`
42 | 3 | `ed.add(pd.doubleValue());`
43 | 21 | `}`
44 |  | ``
45 |  | `/**`
46 |  | `* @see MatrixElementOperations#computePathData(Edge, Edge)`
47 |  | `*/`
48 |  | `public Object computePathData(Edge e1, Edge e2)`
49 |  | `{`
50 | 21 | `double d1 = ((MutableDouble)e1.getUserDatum(EDGE_KEY)).doubleValue();`
51 | 21 | `double d2 = ((MutableDouble)e2.getUserDatum(EDGE_KEY)).doubleValue();`
52 | 21 | `return new MutableDouble(d1*d2);`
53 |  | `}`
54 |  | `}`

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