| Index: gcc/gmp/mpn/generic/sb_bdiv_q.c
|
| diff --git a/gcc/gmp/mpn/generic/sb_bdiv_q.c b/gcc/gmp/mpn/generic/sb_bdiv_q.c
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| deleted file mode 100644
|
| index 474c804d48a38ad5786a03bff2dbf9bfe4f1644a..0000000000000000000000000000000000000000
|
| --- a/gcc/gmp/mpn/generic/sb_bdiv_q.c
|
| +++ /dev/null
|
| @@ -1,91 +0,0 @@
|
| -/* mpn_sb_bdiv_q -- schoolbook Hensel division with precomputed inverse,
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| - returning quotient only.
|
| -
|
| - Contributed to the GNU project by Niels Möller.
|
| -
|
| - THE FUNCTIONS IN THIS FILE ARE INTERNAL FUNCTIONS WITH MUTABLE INTERFACES.
|
| - IT IS ONLY SAFE TO REACH THEM THROUGH DOCUMENTED INTERFACES. IN FACT, IT IS
|
| - ALMOST GUARANTEED THAT THEY'LL CHANGE OR DISAPPEAR IN A FUTURE GMP RELEASE.
|
| -
|
| -Copyright 2005, 2006 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 3 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. If not, see http://www.gnu.org/licenses/. */
|
| -
|
| -#include "gmp.h"
|
| -#include "gmp-impl.h"
|
| -
|
| -
|
| -/* Computes Q = N / D mod B^nn, destroys N.
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| - Clobbers N.
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| -
|
| - D must be odd. dinv is (-D)^-1 mod B.
|
| -
|
| -
|
| - The straightforward way to compute Q is to cancel one limb at a time, using
|
| -
|
| - qp[i] = D^{-1} * np[i] (mod B)
|
| - N -= B^i * qp[i] * D
|
| -
|
| - But we prefer addition to subtraction, since mpn_addmul_1 is often faster
|
| - than mpn_submul_1. Q = - N / D can be computed by iterating
|
| -
|
| - qp[i] = (-D)^{-1} * np[i] (mod B)
|
| - N += B^i * qp[i] * D
|
| -
|
| - And then we flip the sign, -Q = (not Q) + 1.
|
| -*/
|
| -
|
| -void
|
| -mpn_sb_bdiv_q (mp_ptr qp,
|
| - mp_ptr np, mp_size_t nn,
|
| - mp_srcptr dp, mp_size_t dn,
|
| - mp_limb_t dinv)
|
| -{
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| - mp_size_t i;
|
| - mp_limb_t qh;
|
| -
|
| - ASSERT (nn > 0);
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| - ASSERT (dn > 0);
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| - ASSERT (nn >= dn);
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| - ASSERT (dp[0] & 1);
|
| -
|
| - for (i = 0; i < nn - dn; i++)
|
| - {
|
| - mp_limb_t cy;
|
| - mp_limb_t q;
|
| -
|
| - q = dinv * np[i];
|
| - qp[i] = ~q;
|
| - cy = mpn_addmul_1 (np + i, dp, dn, q);
|
| - mpn_add_1 (np + i + dn, np + i + dn, nn - i - dn, cy);
|
| - ASSERT (np[i] == 0);
|
| - }
|
| -
|
| - for (; i < nn - 1; i++)
|
| - {
|
| - mp_limb_t q;
|
| -
|
| - q = dinv * np[i];
|
| - qp[i] = ~q;
|
| - mpn_addmul_1 (np + i, dp, nn - i, q);
|
| -
|
| - ASSERT (np[i] == 0);
|
| - }
|
| -
|
| - /* Final limb */
|
| - qp[nn - 1] = ~(dinv * np[nn - 1]);
|
| - qh = mpn_add_1 (qp, qp, nn, 1); /* FIXME: can we get carry? */
|
| -}
|
|
|