vasilito
facf0c92e0
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.
71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/* mpq_inv(dest,src) -- invert a rational number, i.e. set DEST to SRC
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with the numerator and denominator swapped.
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Copyright 1991, 1994, 1995, 2000, 2001, 2012 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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void
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mpq_inv (mpq_ptr dest, mpq_srcptr src)
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{
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mp_size_t num_size = SIZ(NUM(src));
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mp_size_t den_size = SIZ(DEN(src));
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if (num_size < 0)
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{
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num_size = -num_size;
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den_size = -den_size;
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}
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else if (UNLIKELY (num_size == 0))
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DIVIDE_BY_ZERO;
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SIZ(DEN(dest)) = num_size;
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SIZ(NUM(dest)) = den_size;
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/* If dest == src we may just swap the numerator and denominator;
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we ensured that the new denominator is positive. */
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if (dest == src)
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{
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MP_PTR_SWAP (PTR(NUM(dest)), PTR(DEN(dest)));
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MP_SIZE_T_SWAP (ALLOC(NUM(dest)), ALLOC(DEN(dest)));
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}
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else
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{
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mp_ptr dp;
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den_size = ABS (den_size);
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dp = MPZ_NEWALLOC (NUM(dest), den_size);
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MPN_COPY (dp, PTR(DEN(src)), den_size);
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dp = MPZ_NEWALLOC (DEN(dest), num_size);
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MPN_COPY (dp, PTR(NUM(src)), num_size);
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}
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}
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