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Fixed hashcode computation so elements in first row, col contribute.

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git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/math/trunk@141480 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Phil Steitz 2004-10-25 02:13:22 +00:00
parent 72857df1fe
commit 691be295d1
1 changed files with 3 additions and 3 deletions
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src/java/org/apache/commons/math/linear/RealMatrixImpl.java
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@ -45,7 +45,7 @@ import org.apache.commons.math.util.MathUtils;
* is 0-based -- e.g., <code>getEntry(0, 0)</code> * is 0-based -- e.g., <code>getEntry(0, 0)</code>
* returns the element in the first row, first column of the matrix.</li></ul> * returns the element in the first row, first column of the matrix.</li></ul>
* *
* @version $Revision: 1.33 $ $Date: 2004/10/12 06:19:50 $ * @version $Revision: 1.34 $ $Date: 2004/10/25 02:13:22 $
*/ */
public class RealMatrixImpl implements RealMatrix, Serializable { public class RealMatrixImpl implements RealMatrix, Serializable {
@ -861,7 +861,7 @@ public class RealMatrixImpl implements RealMatrix, Serializable {
ret = ret * 31 + nCols; ret = ret * 31 + nCols;
for (int row = 0; row < nRows; row++) { for (int row = 0; row < nRows; row++) {
for (int col = 0; col < nCols; col++) { for (int col = 0; col < nCols; col++) {
ret = ret * 31 + (11 * row + 17 * col) * ret = ret * 31 + (11 * (row+1) + 17 * (col+1)) *
MathUtils.hash(data[row][col]); MathUtils.hash(data[row][col]);
} }
} }