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https://issues.apache.org/jira/browse/MATH-690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13127035#comment-13127035
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Gilles commented on MATH-690:
-----------------------------
"sign" removed in revision 1183138.
> Remove methods from "MathUtils"
> -------------------------------
>
> Key: MATH-690
> URL: https://issues.apache.org/jira/browse/MATH-690
> Project: Commons Math
> Issue Type: Task
> Reporter: Gilles
> Assignee: Gilles
> Priority: Trivial
> Labels: api-change
> Fix For: 3.0
>
>
> I propose to remove the following methods from "MathUtils":
> public static double sign(final double x)
> public static float sign(final float x)
> public static double sinh(double x)
> public static double cosh(double x)
> Also, "sign" and "indicator" functions seem redundant (and the "float" and
> "double" versions are not dealing correctly with -0.0).
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