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.
112 lines
2.7 KiB
C
112 lines
2.7 KiB
C
/* mpz_tdiv_qr(quot,rem,dividend,divisor) -- Set QUOT to DIVIDEND/DIVISOR,
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and REM to DIVIDEND mod DIVISOR.
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Copyright 1991, 1993, 1994, 2000, 2001, 2005, 2011, 2012, 2021 Free
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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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#include "longlong.h"
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void
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mpz_tdiv_qr (mpz_ptr quot, mpz_ptr rem, mpz_srcptr num, mpz_srcptr den)
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{
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mp_size_t ql, n0;
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mp_size_t ns, ds, nl, dl;
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mp_ptr np, dp, qp, rp;
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TMP_DECL;
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ns = SIZ (num);
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ds = SIZ (den);
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nl = ABS (ns);
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dl = ABS (ds);
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ql = nl - dl + 1;
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if (UNLIKELY (dl == 0))
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DIVIDE_BY_ZERO;
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rp = MPZ_REALLOC (rem, dl);
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if (ql <= 0)
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{
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if (num != rem)
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{
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np = PTR (num);
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MPN_COPY (rp, np, nl);
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SIZ (rem) = SIZ (num);
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}
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/* This needs to follow the assignment to rem, in case the
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numerator and quotient are the same. */
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SIZ (quot) = 0;
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return;
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}
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qp = MPZ_REALLOC (quot, ql);
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TMP_MARK;
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np = PTR (num);
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dp = PTR (den);
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/* FIXME: We should think about how to handle the temporary allocation.
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Perhaps mpn_tdiv_qr should handle it, since it anyway often needs to
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allocate temp space. */
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/* Copy denominator to temporary space if it overlaps with the quotient
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or remainder. */
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if (dp == rp || dp == qp)
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{
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mp_ptr tp;
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tp = TMP_ALLOC_LIMBS (dl);
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MPN_COPY (tp, dp, dl);
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dp = tp;
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}
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/* Copy numerator to temporary space if it overlaps with the quotient or
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remainder. */
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if (np == rp || np == qp)
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{
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mp_ptr tp;
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tp = TMP_ALLOC_LIMBS (nl);
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MPN_COPY (tp, np, nl);
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np = tp;
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}
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for (n0 = 0; *dp == 0; ++dp)
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{
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rp [n0++] = *np++;
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--nl;
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}
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mpn_tdiv_qr (qp, rp + n0, 0L, np, nl, dp, dl - n0);
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ql -= qp[ql - 1] == 0;
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MPN_NORMALIZE (rp, dl);
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SIZ (quot) = (ns ^ ds) >= 0 ? ql : -ql;
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SIZ (rem) = ns >= 0 ? dl : -dl;
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TMP_FREE;
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}
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