Author: sebb
Date: Wed Jan 19 18:29:45 2011
New Revision: 1060895
URL: http://svn.apache.org/viewvc?rev=1060895&view=rev
Log:
MATH-479 FastMath.signum(-0.0) does not agree with Math.signum(-0.0)
(tests already added as part of math483)
Modified:
commons/proper/math/branches/MATH_2_X/src/main/java/org/apache/commons/math/util/FastMath.java
Modified:
commons/proper/math/branches/MATH_2_X/src/main/java/org/apache/commons/math/util/FastMath.java
URL:
http://svn.apache.org/viewvc/commons/proper/math/branches/MATH_2_X/src/main/java/org/apache/commons/math/util/FastMath.java?rev=1060895&r1=1060894&r2=1060895&view=diff
==============================================================================
---
commons/proper/math/branches/MATH_2_X/src/main/java/org/apache/commons/math/util/FastMath.java
(original)
+++
commons/proper/math/branches/MATH_2_X/src/main/java/org/apache/commons/math/util/FastMath.java
Wed Jan 19 18:29:45 2011
@@ -579,7 +579,7 @@ public class FastMath {
* @return -1, 0, +1 or NaN depending on sign of a
*/
public static double signum(final double a) {
- return (a < 0.0) ? -1.0 : ((a > 0.0) ? 1.0 : (Double.isNaN(a) ?
Double.NaN : 0.0));
+ return (a < 0.0) ? -1.0 : ((a > 0.0) ? 1.0 : a);
}
/** Compute next number towards positive infinity.
