vasilito
ff4ff35918
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
/* mpn_mullo_basecase -- Internal routine to multiply two natural
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numbers of length n and return the low part.
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THIS IS AN INTERNAL FUNCTION WITH A MUTABLE INTERFACE. IT IS ONLY
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SAFE TO REACH THIS FUNCTION THROUGH DOCUMENTED INTERFACES.
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Copyright (C) 2000, 2002, 2004, 2015 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of either:
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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or
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* the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any
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later version.
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or both in parallel, as here.
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The GNU MP 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 General Public License
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for more details.
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You should have received copies of the GNU General Public License and the
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GNU Lesser General Public License along with the GNU MP Library. If not,
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see https://www.gnu.org/licenses/. */
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#include "gmp-impl.h"
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/* FIXME: Should optionally use mpn_mul_2/mpn_addmul_2. */
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#ifndef MULLO_VARIANT
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#define MULLO_VARIANT 2
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#endif
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#if MULLO_VARIANT == 1
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void
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mpn_mullo_basecase (mp_ptr rp, mp_srcptr up, mp_srcptr vp, mp_size_t n)
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{
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mp_size_t i;
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mpn_mul_1 (rp, up, n, vp[0]);
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for (i = n - 1; i > 0; i--)
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{
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vp++;
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rp++;
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mpn_addmul_1 (rp, up, i, vp[0]);
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}
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}
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#endif
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#if MULLO_VARIANT == 2
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void
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mpn_mullo_basecase (mp_ptr rp, mp_srcptr up, mp_srcptr vp, mp_size_t n)
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{
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mp_limb_t h;
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h = up[0] * vp[n - 1];
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if (n != 1)
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{
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mp_size_t i;
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mp_limb_t v0;
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v0 = *vp++;
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h += up[n - 1] * v0 + mpn_mul_1 (rp, up, n - 1, v0);
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rp++;
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for (i = n - 2; i > 0; i--)
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{
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v0 = *vp++;
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h += up[i] * v0 + mpn_addmul_1 (rp, up, i, v0);
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rp++;
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}
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}
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rp[0] = h;
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}
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#endif
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