From 0f0e1abde967505363f6b4619581aee904507e7c Mon Sep 17 00:00:00 2001
From: Luc Maisonobe <luc@apache.org>
Date: Tue, 6 Sep 2011 20:19:37 +0000
Subject: [PATCH] removed MathUserException from linear package

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1165822 13f79535-47bb-0310-9956-ffa450edef68
---
 .../commons/math/linear/FieldMatrix.java      | 24 -----------------
 .../linear/FieldMatrixChangingVisitor.java    |  2 --
 .../linear/FieldMatrixPreservingVisitor.java  |  2 --
 .../commons/math/linear/RealMatrix.java       | 24 -----------------
 .../linear/RealMatrixChangingVisitor.java     |  2 --
 .../linear/RealMatrixPreservingVisitor.java   |  2 --
 .../commons/math/linear/RealVector.java       |  4 ---
 .../math/linear/Array2DRowRealMatrixTest.java |  2 +-
 .../math/linear/BlockFieldMatrixTest.java     |  2 +-
 .../math/linear/BlockRealMatrixTest.java      |  2 +-
 .../math/linear/FieldMatrixImplTest.java      |  2 +-
 .../math/linear/QRDecompositionImplTest.java  | 27 ++++++++-----------
 .../commons/math/linear/QRSolverTest.java     |  5 ++--
 13 files changed, 17 insertions(+), 83 deletions(-)

diff --git a/src/main/java/org/apache/commons/math/linear/FieldMatrix.java b/src/main/java/org/apache/commons/math/linear/FieldMatrix.java
index a648294ed..50cb85f5d 100644
--- a/src/main/java/org/apache/commons/math/linear/FieldMatrix.java
+++ b/src/main/java/org/apache/commons/math/linear/FieldMatrix.java
@@ -481,8 +481,6 @@ public interface FieldMatrix<T extends FieldElement<T>> extends AnyMatrix {
      * of a row from left to right before going to the leftmost element
      * of the next row.</p>
      * @param visitor visitor used to process all matrix entries
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @see #walkInRowOrder(FieldMatrixPreservingVisitor)
      * @see #walkInRowOrder(FieldMatrixChangingVisitor, int, int, int, int)
      * @see #walkInRowOrder(FieldMatrixPreservingVisitor, int, int, int, int)
@@ -505,8 +503,6 @@ public interface FieldMatrix<T extends FieldElement<T>> extends AnyMatrix {
      * of a row from left to right before going to the leftmost element
      * of the next row.</p>
      * @param visitor visitor used to process all matrix entries
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @see #walkInRowOrder(FieldMatrixChangingVisitor)
      * @see #walkInRowOrder(FieldMatrixChangingVisitor, int, int, int, int)
      * @see #walkInRowOrder(FieldMatrixPreservingVisitor, int, int, int, int)
@@ -533,8 +529,6 @@ public interface FieldMatrix<T extends FieldElement<T>> extends AnyMatrix {
      * @param endRow Final row index (inclusive)
      * @param startColumn Initial column index
      * @param endColumn Final column index
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @throws org.apache.commons.math.exception.OutOfRangeException
      * if the indices are not valid.
      * @see #walkInRowOrder(FieldMatrixChangingVisitor)
@@ -564,8 +558,6 @@ public interface FieldMatrix<T extends FieldElement<T>> extends AnyMatrix {
      * @param endRow Final row index (inclusive)
      * @param startColumn Initial column index
      * @param endColumn Final column index
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @throws org.apache.commons.math.exception.OutOfRangeException
      * if the indices are not valid.
      * @see #walkInRowOrder(FieldMatrixChangingVisitor)
@@ -591,8 +583,6 @@ public interface FieldMatrix<T extends FieldElement<T>> extends AnyMatrix {
      * of a column from top to bottom before going to the topmost element
      * of the next column.</p>
      * @param visitor visitor used to process all matrix entries
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @see #walkInRowOrder(FieldMatrixChangingVisitor)
      * @see #walkInRowOrder(FieldMatrixPreservingVisitor)
      * @see #walkInRowOrder(FieldMatrixChangingVisitor, int, int, int, int)
@@ -615,8 +605,6 @@ public interface FieldMatrix<T extends FieldElement<T>> extends AnyMatrix {
      * of a column from top to bottom before going to the topmost element
      * of the next column.</p>
      * @param visitor visitor used to process all matrix entries
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @see #walkInRowOrder(FieldMatrixChangingVisitor)
      * @see #walkInRowOrder(FieldMatrixPreservingVisitor)
      * @see #walkInRowOrder(FieldMatrixChangingVisitor, int, int, int, int)
@@ -643,8 +631,6 @@ public interface FieldMatrix<T extends FieldElement<T>> extends AnyMatrix {
      * @param endRow Final row index (inclusive)
      * @param startColumn Initial column index
      * @param endColumn Final column index
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @throws org.apache.commons.math.exception.OutOfRangeException
      * if the indices are not valid.
      * @see #walkInRowOrder(FieldMatrixChangingVisitor)
@@ -674,8 +660,6 @@ public interface FieldMatrix<T extends FieldElement<T>> extends AnyMatrix {
      * @param endRow Final row index (inclusive)
      * @param startColumn Initial column index
      * @param endColumn Final column index
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @throws org.apache.commons.math.exception.OutOfRangeException
      * if the indices are not valid.
      * @see #walkInRowOrder(FieldMatrixChangingVisitor)
@@ -700,8 +684,6 @@ public interface FieldMatrix<T extends FieldElement<T>> extends AnyMatrix {
      * <p>The fastest walking order depends on the exact matrix class. It may be
      * different from traditional row or column orders.</p>
      * @param visitor visitor used to process all matrix entries
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @see #walkInRowOrder(FieldMatrixChangingVisitor)
      * @see #walkInRowOrder(FieldMatrixPreservingVisitor)
      * @see #walkInRowOrder(FieldMatrixChangingVisitor, int, int, int, int)
@@ -723,8 +705,6 @@ public interface FieldMatrix<T extends FieldElement<T>> extends AnyMatrix {
      * <p>The fastest walking order depends on the exact matrix class. It may be
      * different from traditional row or column orders.</p>
      * @param visitor visitor used to process all matrix entries
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @see #walkInRowOrder(FieldMatrixChangingVisitor)
      * @see #walkInRowOrder(FieldMatrixPreservingVisitor)
      * @see #walkInRowOrder(FieldMatrixChangingVisitor, int, int, int, int)
@@ -750,8 +730,6 @@ public interface FieldMatrix<T extends FieldElement<T>> extends AnyMatrix {
      * @param endRow Final row index (inclusive)
      * @param startColumn Initial column index
      * @param endColumn Final column index (inclusive)
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @throws org.apache.commons.math.exception.OutOfRangeException
      * if the indices are not valid.
      * @see #walkInRowOrder(FieldMatrixChangingVisitor)
@@ -780,8 +758,6 @@ public interface FieldMatrix<T extends FieldElement<T>> extends AnyMatrix {
      * @param endRow Final row index (inclusive)
      * @param startColumn Initial column index
      * @param endColumn Final column index (inclusive)
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @throws org.apache.commons.math.exception.OutOfRangeException
      * if the indices are not valid.
      * @see #walkInRowOrder(FieldMatrixChangingVisitor)
diff --git a/src/main/java/org/apache/commons/math/linear/FieldMatrixChangingVisitor.java b/src/main/java/org/apache/commons/math/linear/FieldMatrixChangingVisitor.java
index dc00a9456..4624bea9f 100644
--- a/src/main/java/org/apache/commons/math/linear/FieldMatrixChangingVisitor.java
+++ b/src/main/java/org/apache/commons/math/linear/FieldMatrixChangingVisitor.java
@@ -46,8 +46,6 @@ public interface FieldMatrixChangingVisitor<T extends FieldElement<?>> {
      * @param column column index of the entry
      * @param value current value of the entry
      * @return the new value to be set for the entry
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      */
     T visit(int row, int column, T value);
 
diff --git a/src/main/java/org/apache/commons/math/linear/FieldMatrixPreservingVisitor.java b/src/main/java/org/apache/commons/math/linear/FieldMatrixPreservingVisitor.java
index c2c7d4304..cedc5ec67 100644
--- a/src/main/java/org/apache/commons/math/linear/FieldMatrixPreservingVisitor.java
+++ b/src/main/java/org/apache/commons/math/linear/FieldMatrixPreservingVisitor.java
@@ -45,8 +45,6 @@ public interface FieldMatrixPreservingVisitor<T extends FieldElement<?>> {
      * @param row row index of the entry
      * @param column column index of the entry
      * @param value current value of the entry
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      */
     void visit(int row, int column, T value);
 
diff --git a/src/main/java/org/apache/commons/math/linear/RealMatrix.java b/src/main/java/org/apache/commons/math/linear/RealMatrix.java
index a0f4fd3c1..3f4ac508d 100644
--- a/src/main/java/org/apache/commons/math/linear/RealMatrix.java
+++ b/src/main/java/org/apache/commons/math/linear/RealMatrix.java
@@ -486,8 +486,6 @@ public interface RealMatrix extends AnyMatrix {
      * of a row from left to right before going to the leftmost element
      * of the next row.</p>
      * @param visitor visitor used to process all matrix entries
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @see #walkInRowOrder(RealMatrixPreservingVisitor)
      * @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
      * @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
@@ -510,8 +508,6 @@ public interface RealMatrix extends AnyMatrix {
      * of a row from left to right before going to the leftmost element
      * of the next row.</p>
      * @param visitor visitor used to process all matrix entries
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @see #walkInRowOrder(RealMatrixChangingVisitor)
      * @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
      * @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
@@ -538,8 +534,6 @@ public interface RealMatrix extends AnyMatrix {
      * @param endRow Final row index (inclusive)
      * @param startColumn Initial column index
      * @param endColumn Final column index
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @throws org.apache.commons.math.exception.OutOfRangeException if
      * the indices are not valid.
      * @see #walkInRowOrder(RealMatrixChangingVisitor)
@@ -569,8 +563,6 @@ public interface RealMatrix extends AnyMatrix {
      * @param endRow Final row index (inclusive)
      * @param startColumn Initial column index
      * @param endColumn Final column index
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @throws org.apache.commons.math.exception.OutOfRangeException if
      * the indices are not valid.
      * @see #walkInRowOrder(RealMatrixChangingVisitor)
@@ -596,8 +588,6 @@ public interface RealMatrix extends AnyMatrix {
      * of a column from top to bottom before going to the topmost element
      * of the next column.</p>
      * @param visitor visitor used to process all matrix entries
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @see #walkInRowOrder(RealMatrixChangingVisitor)
      * @see #walkInRowOrder(RealMatrixPreservingVisitor)
      * @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
@@ -620,8 +610,6 @@ public interface RealMatrix extends AnyMatrix {
      * of a column from top to bottom before going to the topmost element
      * of the next column.</p>
      * @param visitor visitor used to process all matrix entries
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @see #walkInRowOrder(RealMatrixChangingVisitor)
      * @see #walkInRowOrder(RealMatrixPreservingVisitor)
      * @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
@@ -648,8 +636,6 @@ public interface RealMatrix extends AnyMatrix {
      * @param endRow Final row index (inclusive)
      * @param startColumn Initial column index
      * @param endColumn Final column index
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @throws org.apache.commons.math.exception.OutOfRangeException if
      * the indices are not valid.
      * @see #walkInRowOrder(RealMatrixChangingVisitor)
@@ -679,8 +665,6 @@ public interface RealMatrix extends AnyMatrix {
      * @param endRow Final row index (inclusive)
      * @param startColumn Initial column index
      * @param endColumn Final column index
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @throws org.apache.commons.math.exception.OutOfRangeException if
      * the indices are not valid.
      * @see #walkInRowOrder(RealMatrixChangingVisitor)
@@ -705,8 +689,6 @@ public interface RealMatrix extends AnyMatrix {
      * <p>The fastest walking order depends on the exact matrix class. It may be
      * different from traditional row or column orders.</p>
      * @param visitor visitor used to process all matrix entries
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @see #walkInRowOrder(RealMatrixChangingVisitor)
      * @see #walkInRowOrder(RealMatrixPreservingVisitor)
      * @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
@@ -728,8 +710,6 @@ public interface RealMatrix extends AnyMatrix {
      * <p>The fastest walking order depends on the exact matrix class. It may be
      * different from traditional row or column orders.</p>
      * @param visitor visitor used to process all matrix entries
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @see #walkInRowOrder(RealMatrixChangingVisitor)
      * @see #walkInRowOrder(RealMatrixPreservingVisitor)
      * @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
@@ -755,8 +735,6 @@ public interface RealMatrix extends AnyMatrix {
      * @param endRow Final row index (inclusive)
      * @param startColumn Initial column index
      * @param endColumn Final column index (inclusive)
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @throws org.apache.commons.math.exception.OutOfRangeException if
      * the indices are not valid.
      * @see #walkInRowOrder(RealMatrixChangingVisitor)
@@ -785,8 +763,6 @@ public interface RealMatrix extends AnyMatrix {
      * @param endRow Final row index (inclusive)
      * @param startColumn Initial column index
      * @param endColumn Final column index (inclusive)
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      * @throws org.apache.commons.math.exception.OutOfRangeException if the
      * indices are not valid.
      * @see #walkInRowOrder(RealMatrixChangingVisitor)
diff --git a/src/main/java/org/apache/commons/math/linear/RealMatrixChangingVisitor.java b/src/main/java/org/apache/commons/math/linear/RealMatrixChangingVisitor.java
index 678ac1b99..1f9f88ecc 100644
--- a/src/main/java/org/apache/commons/math/linear/RealMatrixChangingVisitor.java
+++ b/src/main/java/org/apache/commons/math/linear/RealMatrixChangingVisitor.java
@@ -44,8 +44,6 @@ public interface RealMatrixChangingVisitor {
      * @param column column index of the entry
      * @param value current value of the entry
      * @return the new value to be set for the entry
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      */
     double visit(int row, int column, double value);
 
diff --git a/src/main/java/org/apache/commons/math/linear/RealMatrixPreservingVisitor.java b/src/main/java/org/apache/commons/math/linear/RealMatrixPreservingVisitor.java
index a5b44c349..dbae91e4a 100644
--- a/src/main/java/org/apache/commons/math/linear/RealMatrixPreservingVisitor.java
+++ b/src/main/java/org/apache/commons/math/linear/RealMatrixPreservingVisitor.java
@@ -43,8 +43,6 @@ public interface RealMatrixPreservingVisitor {
      * @param row row index of the entry
      * @param column column index of the entry
      * @param value current value of the entry
-     * @throws org.apache.commons.math.exception.MathUserException if the visitor
-     * cannot process an entry.
      */
     void visit(int row, int column, double value);
 
diff --git a/src/main/java/org/apache/commons/math/linear/RealVector.java b/src/main/java/org/apache/commons/math/linear/RealVector.java
index 9d1ff451f..e710db3d6 100644
--- a/src/main/java/org/apache/commons/math/linear/RealVector.java
+++ b/src/main/java/org/apache/commons/math/linear/RealVector.java
@@ -731,8 +731,6 @@ public abstract class RealVector {
      *
      * @param function Function to apply to each entry.
      * @return a new vector.
-     * @throws org.apache.commons.math.exception.MathUserException
-     * if the function throws it.
      */
     public RealVector map(UnivariateRealFunction function) {
         return copy().mapToSelf(function);
@@ -750,8 +748,6 @@ public abstract class RealVector {
      *
      * @param function Function to apply to each entry.
      * @return a reference to this vector.
-     * @throws org.apache.commons.math.exception.MathUserException
-     * if the function throws it.
      */
     public RealVector mapToSelf(UnivariateRealFunction function) {
         Iterator<Entry> it = (function.value(0) == 0) ? sparseIterator() : iterator();
diff --git a/src/test/java/org/apache/commons/math/linear/Array2DRowRealMatrixTest.java b/src/test/java/org/apache/commons/math/linear/Array2DRowRealMatrixTest.java
index b56bd9db5..02187f4ec 100644
--- a/src/test/java/org/apache/commons/math/linear/Array2DRowRealMatrixTest.java
+++ b/src/test/java/org/apache/commons/math/linear/Array2DRowRealMatrixTest.java
@@ -972,7 +972,7 @@ public final class Array2DRowRealMatrixTest {
     }
 
     @Test
-    public void testWalk() throws MathUserException {
+    public void testWalk() {
         int rows    = 150;
         int columns = 75;
 
diff --git a/src/test/java/org/apache/commons/math/linear/BlockFieldMatrixTest.java b/src/test/java/org/apache/commons/math/linear/BlockFieldMatrixTest.java
index 15212c3f8..e4a5df8d0 100644
--- a/src/test/java/org/apache/commons/math/linear/BlockFieldMatrixTest.java
+++ b/src/test/java/org/apache/commons/math/linear/BlockFieldMatrixTest.java
@@ -1237,7 +1237,7 @@ public final class BlockFieldMatrixTest {
     }
 
     @Test
-    public void testWalk() throws MathUserException {
+    public void testWalk() {
         int rows    = 150;
         int columns = 75;
 
diff --git a/src/test/java/org/apache/commons/math/linear/BlockRealMatrixTest.java b/src/test/java/org/apache/commons/math/linear/BlockRealMatrixTest.java
index edac0a367..b9851f130 100644
--- a/src/test/java/org/apache/commons/math/linear/BlockRealMatrixTest.java
+++ b/src/test/java/org/apache/commons/math/linear/BlockRealMatrixTest.java
@@ -1142,7 +1142,7 @@ public final class BlockRealMatrixTest {
     }
 
     @Test
-    public void testWalk() throws MathUserException {
+    public void testWalk() {
         int rows    = 150;
         int columns = 75;
 
diff --git a/src/test/java/org/apache/commons/math/linear/FieldMatrixImplTest.java b/src/test/java/org/apache/commons/math/linear/FieldMatrixImplTest.java
index 459c5fb5a..9abd8c3ae 100644
--- a/src/test/java/org/apache/commons/math/linear/FieldMatrixImplTest.java
+++ b/src/test/java/org/apache/commons/math/linear/FieldMatrixImplTest.java
@@ -964,7 +964,7 @@ public final class FieldMatrixImplTest {
     }
 
     @Test
-    public void testWalk() throws MathUserException {
+    public void testWalk() {
         int rows    = 150;
         int columns = 75;
 
diff --git a/src/test/java/org/apache/commons/math/linear/QRDecompositionImplTest.java b/src/test/java/org/apache/commons/math/linear/QRDecompositionImplTest.java
index 383ae931f..c5d57ddd9 100644
--- a/src/test/java/org/apache/commons/math/linear/QRDecompositionImplTest.java
+++ b/src/test/java/org/apache/commons/math/linear/QRDecompositionImplTest.java
@@ -19,7 +19,6 @@ package org.apache.commons.math.linear;
 
 import java.util.Random;
 
-import org.apache.commons.math.exception.MathUserException;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -50,10 +49,9 @@ public class QRDecompositionImplTest {
 
     private static final double normTolerance = 10e-14;
 
-    /** test dimensions 
-     * @throws MathUserException */
+    /** test dimensions */
     @Test
-    public void testDimensions() throws MathUserException {
+    public void testDimensions() {
         checkDimension(MatrixUtils.createRealMatrix(testData3x3NonSingular));
 
         checkDimension(MatrixUtils.createRealMatrix(testData4x3));
@@ -78,10 +76,9 @@ public class QRDecompositionImplTest {
         Assert.assertEquals(columns, qr.getR().getColumnDimension());
     }
 
-    /** test A = QR 
-     * @throws MathUserException */
+    /** test A = QR */
     @Test
-    public void testAEqualQR() throws MathUserException {
+    public void testAEqualQR() {
         checkAEqualQR(MatrixUtils.createRealMatrix(testData3x3NonSingular));
 
         checkAEqualQR(MatrixUtils.createRealMatrix(testData3x3Singular));
@@ -105,10 +102,9 @@ public class QRDecompositionImplTest {
         Assert.assertEquals(0, norm, normTolerance);
     }
 
-    /** test the orthogonality of Q 
-     * @throws MathUserException */
+    /** test the orthogonality of Q */
     @Test
-    public void testQOrthogonal() throws MathUserException {
+    public void testQOrthogonal() {
         checkQOrthogonal(MatrixUtils.createRealMatrix(testData3x3NonSingular));
 
         checkQOrthogonal(MatrixUtils.createRealMatrix(testData3x3Singular));
@@ -135,7 +131,7 @@ public class QRDecompositionImplTest {
 
     /** test that R is upper triangular */
     @Test
-    public void testRUpperTriangular() throws MathUserException {
+    public void testRUpperTriangular() {
         RealMatrix matrix = MatrixUtils.createRealMatrix(testData3x3NonSingular);
         checkUpperTriangular(new QRDecompositionImpl(matrix).getR());
 
@@ -159,7 +155,7 @@ public class QRDecompositionImplTest {
 
     }
 
-    private void checkUpperTriangular(RealMatrix m) throws MathUserException {
+    private void checkUpperTriangular(RealMatrix m) {
         m.walkInOptimizedOrder(new DefaultRealMatrixPreservingVisitor() {
             @Override
             public void visit(int row, int column, double value) {
@@ -170,10 +166,9 @@ public class QRDecompositionImplTest {
         });
     }
 
-    /** test that H is trapezoidal 
-     * @throws MathUserException */
+    /** test that H is trapezoidal */
     @Test
-    public void testHTrapezoidal() throws MathUserException {
+    public void testHTrapezoidal() {
         RealMatrix matrix = MatrixUtils.createRealMatrix(testData3x3NonSingular);
         checkTrapezoidal(new QRDecompositionImpl(matrix).getH());
 
@@ -197,7 +192,7 @@ public class QRDecompositionImplTest {
 
     }
 
-    private void checkTrapezoidal(RealMatrix m) throws MathUserException {
+    private void checkTrapezoidal(RealMatrix m) {
         m.walkInOptimizedOrder(new DefaultRealMatrixPreservingVisitor() {
             @Override
             public void visit(int row, int column, double value) {
diff --git a/src/test/java/org/apache/commons/math/linear/QRSolverTest.java b/src/test/java/org/apache/commons/math/linear/QRSolverTest.java
index 296c5eb82..5c6368e21 100644
--- a/src/test/java/org/apache/commons/math/linear/QRSolverTest.java
+++ b/src/test/java/org/apache/commons/math/linear/QRSolverTest.java
@@ -19,7 +19,6 @@ package org.apache.commons.math.linear;
 
 import java.util.Random;
 
-import org.apache.commons.math.exception.MathUserException;
 import org.apache.commons.math.exception.MathIllegalArgumentException;
 
 import org.junit.Test;
@@ -147,7 +146,7 @@ public class QRSolverTest {
     }
 
     @Test
-    public void testOverdetermined() throws MathUserException {
+    public void testOverdetermined() {
         final Random r    = new Random(5559252868205245l);
         int          p    = (7 * BlockRealMatrix.BLOCK_SIZE) / 4;
         int          q    = (5 * BlockRealMatrix.BLOCK_SIZE) / 4;
@@ -171,7 +170,7 @@ public class QRSolverTest {
     }
 
     @Test
-    public void testUnderdetermined() throws MathUserException {
+    public void testUnderdetermined() {
         final Random r    = new Random(42185006424567123l);
         int          p    = (5 * BlockRealMatrix.BLOCK_SIZE) / 4;
         int          q    = (7 * BlockRealMatrix.BLOCK_SIZE) / 4;