| Index: gcc/gmp/mpn/generic/mod_1_2.c
|
| diff --git a/gcc/gmp/mpn/generic/mod_1_2.c b/gcc/gmp/mpn/generic/mod_1_2.c
|
| deleted file mode 100644
|
| index ffadd536de55a5f1eec257ea5d7bcfaee64da993..0000000000000000000000000000000000000000
|
| --- a/gcc/gmp/mpn/generic/mod_1_2.c
|
| +++ /dev/null
|
| @@ -1,117 +0,0 @@
|
| -/* mpn_mod_1s_2p (ap, n, b, cps)
|
| - Divide (ap,,n) by b. Return the single-limb remainder.
|
| - Requires that b < B / 2.
|
| -
|
| - Contributed to the GNU project by Torbjorn Granlund.
|
| -
|
| - THE FUNCTIONS IN THIS FILE ARE INTERNAL WITH MUTABLE INTERFACES. IT IS ONLY
|
| - SAFE TO REACH THEM THROUGH DOCUMENTED INTERFACES. IN FACT, IT IS ALMOST
|
| - GUARANTEED THAT THEY WILL CHANGE OR DISAPPEAR IN A FUTURE GNU MP RELEASE.
|
| -
|
| -Copyright 2008, 2009 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"
|
| -#include "longlong.h"
|
| -
|
| -void
|
| -mpn_mod_1s_2p_cps (mp_limb_t cps[5], mp_limb_t b)
|
| -{
|
| - mp_limb_t bi;
|
| - mp_limb_t B1modb, B2modb, B3modb;
|
| - int cnt;
|
| -
|
| - ASSERT (b <= GMP_NUMB_MAX / 2);
|
| -
|
| - count_leading_zeros (cnt, b);
|
| -
|
| - b <<= cnt;
|
| - invert_limb (bi, b);
|
| -
|
| - B1modb = -b * ((bi >> (GMP_LIMB_BITS-cnt)) | (CNST_LIMB(1) << cnt));
|
| - ASSERT (B1modb <= b); /* NB: not fully reduced mod b */
|
| - udiv_rnd_preinv (B2modb, B1modb, b, bi);
|
| - udiv_rnd_preinv (B3modb, B2modb, b, bi);
|
| -
|
| - cps[0] = bi;
|
| - cps[1] = cnt;
|
| - cps[2] = B1modb >> cnt;
|
| - cps[3] = B2modb >> cnt;
|
| - cps[4] = B3modb >> cnt;
|
| -}
|
| -
|
| -mp_limb_t
|
| -mpn_mod_1s_2p (mp_srcptr ap, mp_size_t n, mp_limb_t b, mp_limb_t cps[5])
|
| -{
|
| - mp_limb_t rh, rl, bi, q, ph, pl, ch, cl, r;
|
| - mp_limb_t B1modb, B2modb, B3modb;
|
| - mp_size_t i;
|
| - int cnt;
|
| -
|
| - B1modb = cps[2];
|
| - B2modb = cps[3];
|
| - B3modb = cps[4];
|
| -
|
| - if ((n & 1) != 0)
|
| - {
|
| - umul_ppmm (rh, rl, ap[n - 1], B2modb);
|
| - umul_ppmm (ph, pl, ap[n - 2], B1modb);
|
| - add_ssaaaa (ph, pl, ph, pl, 0, ap[n - 3]);
|
| - add_ssaaaa (rh, rl, rh, rl, ph, pl);
|
| - n--;
|
| - }
|
| - else
|
| - {
|
| - umul_ppmm (rh, rl, ap[n - 1], B1modb);
|
| - add_ssaaaa (rh, rl, rh, rl, 0, ap[n - 2]);
|
| - }
|
| -
|
| - for (i = n - 4; i >= 0; i -= 2)
|
| - {
|
| - /* rr = ap[i] < B
|
| - + ap[i+1] * (B mod b) <= (B-1)(b-1)
|
| - + LO(rr) * (B^2 mod b) <= (B-1)(b-1)
|
| - + HI(rr) * (B^3 mod b) <= (B-1)(b-1)
|
| - */
|
| - umul_ppmm (ph, pl, ap[i + 1], B1modb);
|
| - add_ssaaaa (ph, pl, ph, pl, 0, ap[i + 0]);
|
| -
|
| - umul_ppmm (ch, cl, rl, B2modb);
|
| - add_ssaaaa (ph, pl, ph, pl, ch, cl);
|
| -
|
| - umul_ppmm (rh, rl, rh, B3modb);
|
| - add_ssaaaa (rh, rl, rh, rl, ph, pl);
|
| - }
|
| -
|
| - bi = cps[0];
|
| - cnt = cps[1];
|
| -
|
| -#if 1
|
| - umul_ppmm (rh, cl, rh, B1modb);
|
| - add_ssaaaa (rh, rl, rh, rl, 0, cl);
|
| - r = (rh << cnt) | (rl >> (GMP_LIMB_BITS - cnt));
|
| -#else
|
| - udiv_qrnnd_preinv (q, r, rh >> (GMP_LIMB_BITS - cnt),
|
| - (rh << cnt) | (rl >> (GMP_LIMB_BITS - cnt)), b, bi);
|
| - ASSERT (q <= 2); /* optimize for small quotient? */
|
| -#endif
|
| -
|
| - udiv_qrnnd_preinv (q, r, r, rl << cnt, b, bi);
|
| -
|
| - return r >> cnt;
|
| -}
|
|
|