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Posted to issues@commons.apache.org by "Ken Williams (JIRA)" <ji...@apache.org> on 2015/06/19 23:45:03 UTC

[jira] [Created] (MATH-1237) Doc bug in floorMod()

Ken Williams created MATH-1237:
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             Summary: Doc bug in floorMod()
                 Key: MATH-1237
                 URL: https://issues.apache.org/jira/browse/MATH-1237
             Project: Commons Math
          Issue Type: Bug
            Reporter: Ken Williams


The docs for {{floorDiv()}} and {{floorMod()}} (both the {{int}} & {{long}} methods) say things like:

Finds q such that a = q b + r with 0 <= r < b *if b > 0* and b < r <= 0 *if b > 0*.

That latter clause is probably supposed to be "if b < 0" - this should be clarified since (AFAICT) the whole point of these functions is to change the behavior from native ops when {{b}} is negative, or maybe when {{a*b}} is negative, but I'm not really sure which.

As an aside, it would be great to add similar methods when {{a}} is a float/double, because Java's mod/div operators support float/double types too.



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