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.
95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
/* mpfr_add_ui -- add a floating-point number with a machine integer
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Copyright 2000-2004, 2006-2025 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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#define MPFR_NEED_LONGLONG_H
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#include "mpfr-impl.h"
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MPFR_HOT_FUNCTION_ATTR int
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mpfr_add_ui (mpfr_ptr y, mpfr_srcptr x, unsigned long int u, mpfr_rnd_t rnd_mode)
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{
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MPFR_LOG_FUNC
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(("x[%Pd]=%.*Rg u=%lu rnd=%d",
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mpfr_get_prec(x), mpfr_log_prec, x, u, rnd_mode),
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("y[%Pd]=%.*Rg", mpfr_get_prec (y), mpfr_log_prec, y));
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/* (unsigned long) 0 is assumed to be a real 0 (unsigned) */
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if (MPFR_UNLIKELY (u == 0))
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return mpfr_set (y, x, rnd_mode);
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/* This block is actually useless, but this is a minor optimization. */
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if (MPFR_UNLIKELY (MPFR_IS_SINGULAR (x)))
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{
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if (MPFR_IS_NAN (x))
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{
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MPFR_SET_NAN (y);
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MPFR_RET_NAN;
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}
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if (MPFR_IS_INF (x))
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{
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MPFR_SET_INF (y);
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MPFR_SET_SAME_SIGN (y, x);
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MPFR_RET (0); /* +/-infinity is exact */
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}
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MPFR_ASSERTD (MPFR_IS_ZERO (x) && u != 0);
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/* Note: the fact that u != 0 is important due to signed zeros. */
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return mpfr_set_ui (y, u, rnd_mode);
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}
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/* Main code */
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{
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int inex;
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MPFR_SAVE_EXPO_DECL (expo);
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/* Optimization note: Exponent save/restore operations may be
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removed if mpfr_add works even when uu is out-of-range. */
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MPFR_SAVE_EXPO_MARK (expo);
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#ifdef MPFR_LONG_WITHIN_LIMB
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{
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mpfr_t uu;
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mp_limb_t up[1];
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int cnt;
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MPFR_TMP_INIT1 (up, uu, GMP_NUMB_BITS);
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/* So, u fits in a mp_limb_t, which justifies the casts below. */
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MPFR_ASSERTD (u != 0);
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count_leading_zeros (cnt, (mp_limb_t) u);
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up[0] = (mp_limb_t) u << cnt;
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MPFR_SET_EXP (uu, GMP_NUMB_BITS - cnt);
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inex = mpfr_add (y, x, uu, rnd_mode);
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}
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#else
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{
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mpfr_t uu;
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mpfr_init2 (uu, sizeof (unsigned long) * CHAR_BIT);
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mpfr_set_ui (uu, u, MPFR_RNDZ);
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inex = mpfr_add (y, x, uu, rnd_mode);
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mpfr_clear (uu);
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}
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#endif
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MPFR_SAVE_EXPO_UPDATE_FLAGS (expo, __gmpfr_flags);
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MPFR_SAVE_EXPO_FREE (expo);
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return mpfr_check_range (y, inex, rnd_mode);
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}
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}
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