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.
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/* mpfr_dot -- dot product of two array of numbers
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Copyright 2018-2025 Free Software Foundation, Inc.
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Contributed by the Pascaline and Caramba projects, INRIA.
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This file is part of the GNU MPFR Library.
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The GNU MPFR Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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The GNU MPFR 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 Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MPFR Library; see the file COPYING.LESSER.
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If not, see <https://www.gnu.org/licenses/>. */
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#include "mpfr-impl.h"
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/* FIXME: handle intermediate overflows and underflows. */
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/* res <- a[0]*b[0] + ... + a[n-1]*b[n-1] */
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int
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mpfr_dot (mpfr_ptr res, const mpfr_ptr *a, const mpfr_ptr *b,
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unsigned long n, mpfr_rnd_t rnd)
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{
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mpfr_t *c;
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size_t i;
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int inex;
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mpfr_ptr *tab;
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if (MPFR_UNLIKELY (n == 0))
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{
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MPFR_SET_ZERO (res);
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MPFR_SET_POS (res);
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MPFR_RET (0);
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}
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c = (mpfr_t *) mpfr_allocate_func (n * sizeof (mpfr_t));
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tab = (mpfr_ptr *) mpfr_allocate_func (n * sizeof (mpfr_ptr));
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for (i = 0; i < n; i++)
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{
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mpfr_init2 (c[i], mpfr_get_prec (a[i]) + mpfr_get_prec (b[i]));
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inex = mpfr_mul (c[i], a[i], b[i], MPFR_RNDZ); /* exact except... */
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MPFR_ASSERTN (inex == 0); /* failure in case of overflow/underflow */
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tab[i] = c[i];
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}
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inex = mpfr_sum (res, tab, n, rnd);
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for (i = 0; i < n; i++)
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mpfr_clear (c[i]);
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mpfr_free_func (c, n * sizeof (mpfr_t));
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mpfr_free_func (tab, n * sizeof (mpfr_ptr));
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return inex;
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}
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