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List:       lucene-user
Subject:    Re: SloppyMath license
From:       Robert Muir <rcmuir () gmail ! com>
Date:       2015-09-19 17:04:36
Message-ID: CAOdYfZWpQ9sSnqONKO5j8od5zGQGDgGM4oS4JG4RqTk-OsAezQ () mail ! gmail ! com
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call it public domain, call it attribution-only, whatever you like.

there is nothing incompatible with Apache 2, fdlibm was also used by
apache harmony for its math code.

On Sat, Sep 19, 2015 at 12:33 PM, Earl Hood <earlhood@gmail.com> wrote:
> On Sat, Sep 19, 2015 at 11:14 AM, Robert Muir wrote:
>
>> There is nothing unusual about public domain code. If your lawyers do
>> not understand that, tell them to go back to school.
>
> Actually, the code in question is not in the public domain, despite that
> the term "public domain" is in the comments of SloppyMath.java:
>
>
> /* some code derived from jodk: http://code.google.com/p/jodk/ (apache 2.0)
>  * asin() derived from fdlibm: http://www.netlib.org/fdlibm/e_asin.c
> (public domain):
>  * =============================================================================
>  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
>  *
>  * Developed at SunSoft, a Sun Microsystems, Inc. business.
>  * Permission to use, copy, modify, and distribute this
>  * software is freely granted, provided that this notice
>  * is preserved.
>  * =============================================================================
>  */
>
> Nowhere in e_asin.c is it mentioned the file has been released to the
> public domain.
>
> The 1993 block is the actual license from e_asin.c, but examination of
> it indicates that it should be perfectly fine to use in a Apache 2.0
> licensed or non-open-source/free software project.  Just leave the
> notice as-is.
>
> If the OP is still concerned, then the OP will have to follow-up with
> the specific legal concern SloppyMath.java allegedly raises.  Saying
> there is a licensing concern is of little help without providing
> specifics.
>
> --ewh
>
> P.S. IANAL
>
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