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authorPeter Breitenlohner <peb@mppmu.mpg.de>2015-06-20 10:38:01 +0000
committerPeter Breitenlohner <peb@mppmu.mpg.de>2015-06-20 10:38:01 +0000
commit265eb77be2ea7991cb155d175740f1978b9aff45 (patch)
tree50312a038421405d62654d95016e16f1ffc46499 /Build/source/libs/mpfr/mpfr-3.1.3/src/sqrt_ui.c
parentcd9d1f5f065d7a8bb787f683ffac1f907356a285 (diff)
mpfr 3.1.3
git-svn-id: svn://tug.org/texlive/trunk@37627 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/mpfr/mpfr-3.1.3/src/sqrt_ui.c')
-rw-r--r--Build/source/libs/mpfr/mpfr-3.1.3/src/sqrt_ui.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/Build/source/libs/mpfr/mpfr-3.1.3/src/sqrt_ui.c b/Build/source/libs/mpfr/mpfr-3.1.3/src/sqrt_ui.c
new file mode 100644
index 00000000000..4cb6e9420ea
--- /dev/null
+++ b/Build/source/libs/mpfr/mpfr-3.1.3/src/sqrt_ui.c
@@ -0,0 +1,54 @@
+/* mpfr_sqrt_ui -- square root of 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_sqrt_ui (mpfr_ptr r, unsigned long u, mpfr_rnd_t rnd_mode)
+{
+ if (u)
+ {
+ 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_ASSERTN (u == (mp_limb_t) u);
+ count_leading_zeros (cnt, (mp_limb_t) u);
+ *up = (mp_limb_t) u << cnt;
+
+ MPFR_SAVE_EXPO_MARK (expo);
+ MPFR_SET_EXP (uu, GMP_NUMB_BITS - cnt);
+ inex = mpfr_sqrt(r, uu, rnd_mode);
+ MPFR_SAVE_EXPO_FREE (expo);
+ return mpfr_check_range(r, inex, rnd_mode);
+ }
+ else /* sqrt(0) = 0 */
+ {
+ MPFR_SET_ZERO(r);
+ MPFR_SET_POS(r);
+ MPFR_RET(0);
+ }
+}