From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: "Dr. Arne Babenhauserheide" Newsgroups: gmane.lisp.guile.user Subject: Re: re-writing algorithms in Guile Date: Tue, 29 Jun 2021 08:08:09 +0200 Message-ID: <87wnqd19va.fsf@web.de> References: Mime-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="9445"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: mu4e 1.4.15; emacs 27.2 Cc: guile-user@gnu.org To: Jay Sulzberger Original-X-From: guile-user-bounces+guile-user=m.gmane-mx.org@gnu.org Tue Jun 29 08:08:35 2021 Return-path: Envelope-to: guile-user@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ly6vD-0002IA-G7 for guile-user@m.gmane-mx.org; Tue, 29 Jun 2021 08:08:35 +0200 Original-Received: from localhost ([::1]:44656 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ly6vC-0004iH-IH for guile-user@m.gmane-mx.org; Tue, 29 Jun 2021 02:08:34 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:57398) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ly6v2-0004i8-Dx for guile-user@gnu.org; Tue, 29 Jun 2021 02:08:24 -0400 Original-Received: from mout.web.de ([212.227.17.11]:46927) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ly6ux-0002Hy-6M for guile-user@gnu.org; Tue, 29 Jun 2021 02:08:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1624946893; bh=eyV4YpFIyNMyEc5vdm0L+DEeO7QTQZqtwYCacVaqaSs=; h=X-UI-Sender-Class:References:From:To:Cc:Subject:In-reply-to:Date; b=MxshGkTfkCn5fmvk3GbMhGVJrqKK9qxuAxdFEsp/eRtyCXz7YxFHu/babmr3BChBH Ik16kw8KS57xH+a+W1+nARkrSLRe2AiBmDlQS6eiN3+0C5HlsnezkQ6MmSFQjPAFE7 BvLHql6IUN5nBdIPxZ0XstwX95WJG6XqANBYPGx4= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Original-Received: from fluss ([84.165.29.211]) by smtp.web.de (mrweb101 [213.165.67.124]) with ESMTPSA (Nemesis) id 0MKrLo-1ly6ur11X6-0006q3; Tue, 29 Jun 2021 08:08:13 +0200 In-reply-to: X-Provags-ID: V03:K1:Y9cznjtQtKqDA4VQ7N8GfwHQhMhOknLiK+CaxTADn62H0v8SHh5 foRUL+zCn3hDNLP5urlvtBFudi7auXCJ3S03gIPtHqT2BnSiL6PXHHM8d/1LS3dJt8GkABw Gn+WeTraPbaMU0INedpnGmO3N5R1pJaarp1PXBGY7wtyCgrLxRJKW2nsk0L340VJk5AZQlE ssc+9OMnSQPjNRHrg2z/A== X-UI-Out-Filterresults: notjunk:1;V03:K0:XPtD10b443M=:cuHMQQiZSXRtWYJPDpX1e/ wYEehFFerxZkrtkDsPEtbd9gjGDfHsn2EHG96QXTDf5vn1mrDp7TGV8zgXrymS4LU45wH6tJC vleHy1FmfOuCnQEzp7ysLi1+i9Fc0l/WY6d5P5qiFUeXZTTAdgIAQUI+yjGV4i5dTr810XgBg OnqDd3eLyd/+V5o6HNiAmjMKJS6tLS1htzRQqnIXEj8QKSeMq7+ZkR05lpzY45eHf5uNYaRkM e63fI1oFjcTJuQYttRTSEgGccV3MupwRLdByN/KflGgoy8lsFhHGUKizgMGdjmIlJOt3bc+8c qF3cC/thxIj3nlt5Hi8BMWPNKPx8hfurqi7bMyTzYK9Omy5f37FU/Xy00RSOjUQoG3FFmbcQC Wpd11fYRf/xp7/7dUk/tkh4uAOV1T3kVOfpCmGKLQXqGwNWEzXqIkspQG2Ax3MGwnNb/OzFHv 4oeK6lv83EtmDjEjjW2bauslzl1aQEzusQ874okcvwLGY7ap1vwOqsQqYHk48FtaCGKDno4wW sOjZ87SczNdki5lO+RqDRpgYW0RSLt58OCW6K0gN1X9NyPue22EkNjt08oqxBjY5fYCTIplq5 tLnMbFFbHoGej9NFaWJ3RgwLaipOGEs1fACWX0+aRd3pyXXia/bGR0YTsM+N6gttfYqQdt1Nx txUhcN6leLjDvhxt58+NTXNYPaw0wojXO0fCPEG3K/ngHCotT5nun1nR/QLPICzsAtD1i9+zX Nd0z6C01ybzXMHbQA/NzQvpdT0G1GyP5KnbH41fyhp2Tlseaki6jB9EAg4nLiJvFYB8NNO9R Received-SPF: pass client-ip=212.227.17.11; envelope-from=arne_bab@web.de; helo=mout.web.de X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: General Guile related discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-user-bounces+guile-user=m.gmane-mx.org@gnu.org Original-Sender: "guile-user" Xref: news.gmane.io gmane.lisp.guile.user:17628 Archived-At: --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable > Your program in Guile Scheme which realizes an algorithm is not a > derivative work of the program you read, which program is written in > C. Even in the case that your program realizes the same algorithm as > the C program does. The above official article of the US Copyright > Office clearly states this. That is only true, if you do not re-use any structure of the original program that is not part of the algorithm. If you want to be sure, you need a cleanroom re-implementation: Have someone else read the code and write down the pure algorithm. Then implement that without ever having seen the original code. https://en.wikipedia.org/wiki/Clean_room_design Best wishes, Arne =2D-=20 Unpolitisch sein hei=C3=9Ft politisch sein ohne es zu merken --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQJEBAEBCAAuFiEE801qEjXQSQPNItXAE++NRSQDw+sFAmDauMwQHGFybmVfYmFi QHdlYi5kZQAKCRAT741FJAPD66O3D/9dISyVEYQ5+OpSp/M2MXeUgq4/EQ4Uh7Nj o9X81zoVlNRnkQkAF07cKNPOjBv3WROwvMeLrKHawn72HDcB78TxrVcRbxv+KnZd woab2XcY8+ZgWEtDtB1ludgqUjEID0N74azymaMdyeyG3hyelpZltm4ZVOkHonlz /vLJu4abDjCujUFv8Jt3aEIb3NxsD20zIlU70kuSh0esd5JIAz8IzgE5SrWtZ6kO Idm5ffnP+JMh/mgoD2e6TLuoTSu0X51f7riTvDVnNMpzDZbQ59sVd89qw5mIfP9c teJ/6HErkERjGIhMBnoAWIGJBc0TKMEXWfANYV5kozMyKmf5Hb7fSBVOQbdS50qD 5f5PJ0v5/8CpiB9CorZIoF2MVJD+8JAJfhpq+jfTVzssdLXcZGiLowyFyjC6mZFS 2igZiAlhRm1TtH7qhPNKHb05ReEgSjBQUUanu2BAD+RVXJnR6/AfHkTx8i5x/QsZ DalPMhLmYQK27uXGv1fTOTEeDwWHC1Or1Z3bba/QJRjLJLgXJ7OoLPRzMTo+Y/lP /RRMihsmKu/hXPi8ImlRrefHvQD8rZ8fMIPiDdXFXPe9oYQblg6S1LWb53yGG/2w BUt+rm2wtorAUifaN/rrmH9G023p+TUNoAiave7pB8uUKD7Vc/sUB8JcLUQxyfaM K8a8cJ+89ojEBAEBCAAuFiEE3Si95tmHXKvOSosd3M8NswvBBUgFAmDauMwQHGFy bmVfYmFiQHdlYi5kZQAKCRDczw2zC8EFSBN7A/4sP99+nTmrfckuf4HnKSSJUeg0 ifDLyg4t075w52YUaTLhTET+/Mtr9kJS1TSc23dZ1nrCwd3vbLCQ7FZ33+JPolw5 LUuDGQDZjYUuWVyfuhnO6Xsfr8xim25L6U+k3r6fcBVvy7NLai/eke6zfqrwi5vx ctdc+/aVlY0NGQa67A== =WYgu -----END PGP SIGNATURE----- --=-=-=--