+++ /dev/null
-/* mpn_divrem -- Divide natural numbers, producing both remainder and
- quotient. This is now just a middle layer for calling the new
- internal mpn_tdiv_qr.
-
-Copyright (C) 1993, 1994, 1995, 1996, 1997, 1999, 2000 Free Software
-Foundation, Inc.
-
-This file is part of the GNU MP Library.
-
-The GNU MP Library is free software; you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as published by
-the Free Software Foundation; either version 2.1 of the License, or (at your
-option) any later version.
-
-The GNU MP Library is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
-License for more details.
-
-You should have received a copy of the GNU Lesser General Public License
-along with the GNU MP Library; see the file COPYING.LIB. If not, write to
-the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-MA 02111-1307, USA. */
-
-#include "gmp.h"
-#include "gmp-impl.h"
-#include "longlong.h"
-
-mp_limb_t
-#if __STDC__
-mpn_divrem (mp_ptr qp, mp_size_t qxn,
- mp_ptr np, mp_size_t nn,
- mp_srcptr dp, mp_size_t dn)
-#else
-mpn_divrem (qp, qxn, np, nn, dp, dn)
- mp_ptr qp;
- mp_size_t qxn;
- mp_ptr np;
- mp_size_t nn;
- mp_srcptr dp;
- mp_size_t dn;
-#endif
-{
- if (dn == 1)
- {
- mp_limb_t ret;
- mp_ptr q2p;
- mp_size_t qn;
- TMP_DECL (marker);
-
- TMP_MARK (marker);
- q2p = (mp_ptr) TMP_ALLOC ((nn + qxn) * BYTES_PER_MP_LIMB);
-
- np[0] = mpn_divrem_1 (q2p, qxn, np, nn, dp[0]);
- qn = nn + qxn - 1;
- MPN_COPY (qp, q2p, qn);
- ret = q2p[qn];
-
- TMP_FREE (marker);
- return ret;
- }
- else if (dn == 2)
- {
- return mpn_divrem_2 (qp, qxn, np, nn, dp);
- }
- else
- {
- mp_ptr rp, q2p;
- mp_limb_t qhl;
- mp_size_t qn;
- TMP_DECL (marker);
-
- TMP_MARK (marker);
- if (qxn != 0)
- {
- mp_ptr n2p;
- n2p = (mp_ptr) TMP_ALLOC ((nn + qxn) * BYTES_PER_MP_LIMB);
- MPN_ZERO (n2p, qxn);
- MPN_COPY (n2p + qxn, np, nn);
- q2p = (mp_ptr) TMP_ALLOC ((nn - dn + qxn + 1) * BYTES_PER_MP_LIMB);
- rp = (mp_ptr) TMP_ALLOC (dn * BYTES_PER_MP_LIMB);
- mpn_tdiv_qr (q2p, rp, 0L, n2p, nn + qxn, dp, dn);
- MPN_COPY (np, rp, dn);
- qn = nn - dn + qxn;
- MPN_COPY (qp, q2p, qn);
- qhl = q2p[qn];
- }
- else
- {
- q2p = (mp_ptr) TMP_ALLOC ((nn - dn + 1) * BYTES_PER_MP_LIMB);
- rp = (mp_ptr) TMP_ALLOC (dn * BYTES_PER_MP_LIMB);
- mpn_tdiv_qr (q2p, rp, 0L, np, nn, dp, dn);
- MPN_COPY (np, rp, dn); /* overwrite np area with remainder */
- qn = nn - dn;
- MPN_COPY (qp, q2p, qn);
- qhl = q2p[qn];
- }
- TMP_FREE (marker);
- return qhl;
- }
-}