2009-09-29 12:41:28 -04:00
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/*
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Copyright 2009 Jason Moxham
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This file is part of the MPIR Library.
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The MPIR Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License, or (at
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your option) any later version.
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The MPIR Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the MPIR Library; see the file COPYING.LIB. If not, write
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to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "mpir.h"
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#include "gmp-impl.h"
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#include "longlong.h"
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mp_limb_t mpn_divrem_hensel_qr_1(mp_ptr qp, mp_srcptr xp, mp_size_t n, mp_limb_t d)
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2009-09-29 22:24:29 -04:00
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{
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ASSERT(n>0);
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ASSERT_MPN(xp,n);
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ASSERT(MPN_SAME_OR_SEPARATE_P(qp,xp,n));
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ASSERT(d%2==1);
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if(BELOW_THRESHOLD(n,DIVREM_HENSEL_QR_1_THRESHOLD))return mpn_divrem_hensel_qr_1_1(qp,xp,n,d);
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return mpn_divrem_hensel_qr_1_2(qp,xp,n,d);}
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// so (xp,n) = (qp,n)*d -ret*B^n and 0 <= ret < d
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