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Made increment, evaluate consistent wrt NaN, improved javadoc. 

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/math/trunk@141321 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Phil Steitz 2004-06-18 22:09:53 +00:00
parent 2b28400f98
commit 3a385a5aa0
1 changed files with 13 additions and 13 deletions
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26
src/java/org/apache/commons/math/stat/univariate/rank/Min.java
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@ -17,18 +17,19 @@ package org.apache.commons.math.stat.univariate.rank;
import java.io.Serializable;
import org
.apache
.commons
.math
.stat
.univariate
.AbstractStorelessUnivariateStatistic;
import org.apache.commons.math.stat.univariate.AbstractStorelessUnivariateStatistic;
/**
* Returns the minimum of the available values.
* <p>
* <ul>
* <li>The result is <code>NaN</code> iff all values are <code>NaN</code>
* (i.e. <code>NaN</code> values have no impact on the value of the statistic).</li>
* <li>If any of the values equals <code>Double.NEGATIVE_INFINITY</code>,
* the result is <code>Double.NEGATIVE_INFINITY.</code></li>
* </ul>
*
* @version $Revision: 1.16 $ $Date: 2004/04/27 16:42:33 $
* @version $Revision: 1.17 $ $Date: 2004/06/18 22:09:53 $
*/
public class Min extends AbstractStorelessUnivariateStatistic implements Serializable {
@ -45,7 +46,9 @@ public class Min extends AbstractStorelessUnivariateStatistic implements Seriali
* @see org.apache.commons.math.stat.univariate.StorelessUnivariateStatistic#increment(double)
*/
public void increment(final double d) {
value = Double.isNaN(value) ? d : Math.min(value, d);
if (d < value || Double.isNaN(value)) {
value = d;
}
n++;
}
@ -76,10 +79,7 @@ public class Min extends AbstractStorelessUnivariateStatistic implements Seriali
*
* @see org.apache.commons.math.stat.univariate.UnivariateStatistic#evaluate(double[], int, int)
*/
public double evaluate(
final double[] values,
final int begin,
final int length) {
public double evaluate(final double[] values,final int begin, final int length) {
double min = Double.NaN;
if (test(values, begin, length)) {
min = values[begin];