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Javadoc. 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1221507 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Phil Steitz 2011-12-20 22:38:19 +00:00
parent 37a8044ddf
commit f852e1f5ba
1 changed files with 4 additions and 4 deletions
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8
src/main/java/org/apache/commons/math/random/RandomDataImpl.java
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@ -107,16 +107,16 @@ public class RandomDataImpl implements RandomData, Serializable {
/** Serializable version identifier */
private static final long serialVersionUID = -626730818244969716L;
/** Used when generating Exponential samples
* [1] writes:
* One table containing the constants
/**
* Used when generating Exponential samples.
* Table containing the constants
* q_i = sum_{j=1}^i (ln 2)^j/j! = ln 2 + (ln 2)^2/2 + ... + (ln 2)^i/i!
* until the largest representable fraction below 1 is exceeded.
*
* Note that
* 1 = 2 - 1 = exp(ln 2) - 1 = sum_{n=1}^infty (ln 2)^n / n!
* thus q_i -> 1 as i -> infty,
* so the higher 1, the closer to one we get (the series is not alternating).
* so the higher i, the closer to one we get (the series is not alternating).
*
* By trying, n = 16 in Java is enough to reach 1.0.
*/