X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fmath%2FMatrix.java;h=b22bf4e1d27558fc09c6e59e64a45733f12d75cf;hb=187269da0130408d24901c88acb10c217f6284f9;hp=1e8f39d75718cbafae264f6c529a1cc7d555ed1e;hpb=d90895bf6eed41ff1b2d413306afae3cac458756;p=jalview.git

diff --git a/src/jalview/math/Matrix.java b/src/jalview/math/Matrix.java
index 1e8f39d..b22bf4e 100755
--- a/src/jalview/math/Matrix.java
+++ b/src/jalview/math/Matrix.java
@@ -985,12 +985,6 @@ public class Matrix implements MatrixI
     e = v;
   }
 
-  @Override
-  public int hashCode()
-  {
-    return (int) getTotal();
-  }
-
   public double getTotal()
   {
     double d = 0d;
@@ -1004,15 +998,14 @@ public class Matrix implements MatrixI
     return d;
   }
 
+  /**
+   * {@inheritDoc}
+   */
   @Override
-  public boolean equals(Object obj)
+  public boolean equals(MatrixI m2, double delta)
   {
-    if (!(obj instanceof MatrixI))
-    {
-      return false;
-    }
-    MatrixI m2 = (MatrixI) obj;
-    if (this.height() != m2.height() || this.width() != m2.width())
+    if (m2 == null || this.height() != m2.height()
+            || this.width() != m2.width())
     {
       return false;
     }
@@ -1020,7 +1013,8 @@ public class Matrix implements MatrixI
     {
       for (int j = 0; j < this.width(); j++)
       {
-        if (this.getValue(i, j) != m2.getValue(i, j))
+        double diff = this.getValue(i, j) - m2.getValue(i, j);
+        if (Math.abs(diff) > delta)
         {
           return false;
         }