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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 36232] New: - [math][patch] Update UnivariateRealSolverImpl.java
Date Wed, 17 Aug 2005 17:51:55 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=36232

           Summary: [math][patch] Update UnivariateRealSolverImpl.java
           Product: Commons
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Math
        AssignedTo: commons-dev@jakarta.apache.org
        ReportedBy: zxg_32@yahoo.com


Index: UnivariateRealSolverImpl.java
===================================================================
--- UnivariateRealSolverImpl.java       (revision 233212)
+++ UnivariateRealSolverImpl.java       (working copy)
@@ -265,7 +265,8 @@
      */
     protected boolean isBracketing(double lower, double upper,
             UnivariateRealFunction f) throws FunctionEvaluationException {
-        return  (f.value(lower) * f.value(upper) < 0);
+        return ((f.value(lower) > 0 && f.value(upper) < 0) ||
+                (f.value(lower) < 0 && f.value(upper) > 0));
     }

     /**

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