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Release calc version 2.11.1t1
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33
zmul.c
33
zmul.c
@@ -1,8 +1,33 @@
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/*
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* Copyright (c) 1995 David I. Bell
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* Permission is granted to use, distribute, or modify this source,
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* provided that this copyright notice remains intact.
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* zmul - faster than usual multiplying and squaring routines
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*
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* Copyright (C) 1999 David I. Bell
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*
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* Calc is open software; you can redistribute it and/or modify it under
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* the terms of the version 2.1 of the GNU Lesser General Public License
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* as published by the Free Software Foundation.
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*
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* Calc is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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* Public License for more details.
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*
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* A copy of version 2.1 of the GNU Lesser General Public License is
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* distributed with calc under the filename COPYING-LGPL. You should have
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* received a copy with calc; if not, write to Free Software Foundation, Inc.
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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*
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* @(#) $Revision: 29.1 $
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* @(#) $Id: zmul.c,v 29.1 1999/12/14 09:16:17 chongo Exp $
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* @(#) $Source: /usr/local/src/cmd/calc/RCS/zmul.c,v $
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*
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* Under source code control: 1991/01/09 20:01:31
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* File existed as early as: 1991
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*
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* Share and enjoy! :-) http://reality.sgi.com/chongo/tech/comp/calc/
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*/
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/*
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* Faster than usual multiplying and squaring routines.
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* The algorithm used is the reasonably simple one from Knuth, volume 2,
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* section 4.3.3. These recursive routines are of speed O(N^1.585)
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@@ -279,7 +304,7 @@ domul(HALF *v1, LEN size1, HALF *v2, LEN size2, HALF *ans)
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*/
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baseA = v1 + shift;
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baseB = v1;
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baseC = v2 + ((shift <= size2) ? shift : size2);
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baseC = v2 + ((shift <= size2) ? shift : size2);
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baseD = v2;
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baseAB = ans;
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baseDC = ans + shift;
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