Author: psteitz
Date: Sat Nov 22 12:25:27 2008
New Revision: 719909
URL: http://svn.apache.org/viewvc?rev=719909&view=rev
Log:
Replace hashcode functions with JDK 1.5+ provided impls. Deprecate?
Modified:
commons/proper/math/branches/MATH_2_0/src/java/org/apache/commons/math/util/MathUtils.java
Modified:
commons/proper/math/branches/MATH_2_0/src/java/org/apache/commons/math/util/MathUtils.java
URL:
http://svn.apache.org/viewvc/commons/proper/math/branches/MATH_2_0/src/java/org/apache/commons/math/util/MathUtils.java?rev=719909&r1=719908&r2=719909&view=diff
==============================================================================
---
commons/proper/math/branches/MATH_2_0/src/java/org/apache/commons/math/util/MathUtils.java
(original)
+++
commons/proper/math/branches/MATH_2_0/src/java/org/apache/commons/math/util/MathUtils.java
Sat Nov 22 12:25:27 2008
@@ -18,6 +18,7 @@
package org.apache.commons.math.util;
import java.math.BigDecimal;
+import java.util.Arrays;
/**
* Some useful additions to the built-in functions in [EMAIL PROTECTED] Math}.
@@ -465,26 +466,18 @@
* @return the hash code
*/
public static int hash(double value) {
- long bits = Double.doubleToLongBits(value);
- return (int)(bits ^ (bits >>> 32));
+ return new Double(value).hashCode();
}
/**
- * Returns an integer hash code representing the given double array value.
+ * Returns an integer hash code representing the given double array.
*
* @param value the value to be hashed (may be null)
* @return the hash code
* @since 1.2
*/
public static int hash(double[] value) {
- if (value == null) {
- return 0;
- }
- int result = value.length;
- for (int i = 0; i < value.length; ++i) {
- result = result * 31 + hash(value[i]);
- }
- return result;
+ return Arrays.hashCode(value);
}
/**
