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authorAkira Kakuto <kakuto@fuk.kindai.ac.jp>2016-02-22 06:02:38 +0000
committerAkira Kakuto <kakuto@fuk.kindai.ac.jp>2016-02-22 06:02:38 +0000
commitb2ef5d127f546fa32f303b1dedfc4a6390ad677e (patch)
tree17cd90adb54888579df0e08223bf4909332380c2 /Build/source/libs/mpfr/mpfr-src/src/add_ui.c
parent05d739843a7c50294efbda2abf2ab4ea3fc146b1 (diff)
libs/mpfr: New convention
git-svn-id: svn://tug.org/texlive/trunk@39814 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/mpfr/mpfr-src/src/add_ui.c')
-rw-r--r--Build/source/libs/mpfr/mpfr-src/src/add_ui.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/add_ui.c b/Build/source/libs/mpfr/mpfr-src/src/add_ui.c
new file mode 100644
index 00000000000..51b996c82b6
--- /dev/null
+++ b/Build/source/libs/mpfr/mpfr-src/src/add_ui.c
@@ -0,0 +1,58 @@
+/* mpfr_add_ui -- add a floating-point number with a machine integer
+
+Copyright 2000-2004, 2006-2015 Free Software Foundation, Inc.
+Contributed by the AriC and Caramel projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU MPFR Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+The GNU MPFR Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see
+http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#define MPFR_NEED_LONGLONG_H
+#include "mpfr-impl.h"
+
+int
+mpfr_add_ui (mpfr_ptr y, mpfr_srcptr x, unsigned long int u, mpfr_rnd_t rnd_mode)
+{
+ MPFR_LOG_FUNC
+ (("x[%Pu]=%.*Rg u=%lu rnd=%d",
+ mpfr_get_prec(x), mpfr_log_prec, x, u, rnd_mode),
+ ("y[%Pu]=%.*Rg", mpfr_get_prec (y), mpfr_log_prec, y));
+
+ if (MPFR_LIKELY(u != 0) ) /* if u=0, do nothing */
+ {
+ mpfr_t uu;
+ mp_limb_t up[1];
+ unsigned long cnt;
+ int inex;
+ MPFR_SAVE_EXPO_DECL (expo);
+
+ MPFR_TMP_INIT1 (up, uu, GMP_NUMB_BITS);
+ MPFR_ASSERTD (u == (mp_limb_t) u);
+ count_leading_zeros(cnt, (mp_limb_t) u);
+ up[0] = (mp_limb_t) u << cnt;
+
+ /* Optimization note: Exponent save/restore operations may be
+ removed if mpfr_add works even when uu is out-of-range. */
+ MPFR_SAVE_EXPO_MARK (expo);
+ MPFR_SET_EXP (uu, GMP_NUMB_BITS - cnt);
+ inex = mpfr_add(y, x, uu, rnd_mode);
+ MPFR_SAVE_EXPO_FREE (expo);
+ return mpfr_check_range(y, inex, rnd_mode);
+ }
+ else
+ /* (unsigned long) 0 is assumed to be a real 0 (unsigned) */
+ return mpfr_set (y, x, rnd_mode);
+}