Ralf Wiebicke created MATH-936:
----------------------------------
Summary: RandomDataGenerator#nextLong violates bounds
Key: MATH-936
URL: https://issues.apache.org/jira/browse/MATH-936
Project: Commons Math
Issue Type: Bug
Affects Versions: 3.1
Reporter: Ralf Wiebicke
Attachments: RandomGeneratorLongTest.java
I attached a test.
If the underlying RandomGenerator returns 0.0, then nextLong returns
Long.MIN_VALUE, although the lower bound is Long.MIN_VALUE+1.
The javadoc of RandomGenerator#nextDouble does not clearly define, whether the
result includes the lower border of 0.0 or not.
In java.util.Random it clearly defined as included: "uniformly from the range
0.0d (inclusive) to 1.0d (exclusive)". And the existence of JDKRandomGenerator
suggests, that RandomGenerator should have the same contract.
I tested with version 3.1.1 from mvnrepository
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
