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Date:      Tue, 16 May 2017 17:48:39 -0700
From:      Steve Kargl <sgk@troutmask.apl.washington.edu>
To:        Warner Losh <imp@bsdimp.com>
Cc:        FreeBSD Current <freebsd-current@freebsd.org>, "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>
Subject:   Re: UC Berkeley 4-clause copyright
Message-ID:  <20170517004839.GA42771@troutmask.apl.washington.edu>
In-Reply-To: <CANCZdfrha26S7PeEV7XZ33ymbFhSeQhTt0wVL0MgMKgqx_tcQQ@mail.gmail.com>
References:  <20170517002346.GA42582@troutmask.apl.washington.edu> <CANCZdfrha26S7PeEV7XZ33ymbFhSeQhTt0wVL0MgMKgqx_tcQQ@mail.gmail.com>

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On Tue, May 16, 2017 at 06:37:56PM -0600, Warner Losh wrote:
> On Tue, May 16, 2017 at 6:23 PM, Steve Kargl
> <sgk@troutmask.apl.washington.edu> wrote:
> > The files in lib/msun/bsdsrc contain the 4-clause UC Berkeley
> > Copyright.  Supposedly UCB no longer enforces clause 3.  Can
> > clause 3 be removed?
> >
> Yes. Remove it. It's convention these days to also renumber. It was
> likely missed.
> 
> Are there other copyright holders? If so, that would be why I didn't
> remove it at the time years ago.... But I may have missed them too.
> 

lib/msun/b_log.c and lib/msun/mathimpl.h have appear to have
onlu UCB in file (other than bde and das in the RCS string).

lib/msun/b_tgamma.c has a standard 4-clause BSD license with
the years 1992 and 1993 listed.  But, later in the file there
is the comment

/*
 * This code by P. McIlroy, Oct 1992;
 *
 * The financial support of UUNET Communications Services is greatfully
 * acknowledged.
 */

IANAL, so I don't know if this triggers the "and its contributors."
portion of clause 3.

lib/msun/b_exp.c has a standard 4-clause BSD license with the
years 1985 and 1993 listed.  Later in the file is KC Ng's ChangeLog
like annotation

/* EXP(X)
 * RETURN THE EXPONENTIAL OF X
 * DOUBLE PRECISION (IEEE 53 bits, VAX D FORMAT 56 BITS)
 * CODED IN C BY K.C. NG, 1/19/85;
 * REVISED BY K.C. NG on 2/6/85, 2/15/85, 3/7/85, 3/24/85, 4/16/85, 6/14/86.

Again, IANAL.

-- 
Steve
20170425 https://www.youtube.com/watch?v=VWUpyCsUKR4
20161221 https://www.youtube.com/watch?v=IbCHE-hONow



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