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diff --git a/Build/source/libs/mpfr/mpfr-3.1.2/src/si_op.c b/Build/source/libs/mpfr/mpfr-3.1.2/src/si_op.c
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+/* mpfr_add_si -- add a floating-point number with a machine integer
+ mpfr_sub_si -- sub a floating-point number with a machine integer
+ mpfr_si_sub -- sub a machine number with a floating-point number
+
+Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 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. */
+
+#include "mpfr-impl.h"
+
+int
+mpfr_add_si (mpfr_ptr y, mpfr_srcptr x, long int u, mpfr_rnd_t rnd_mode)
+{
+ if (u >= 0)
+ return mpfr_add_ui (y, x, u, rnd_mode);
+ else
+ return mpfr_sub_ui (y, x, -u, rnd_mode);
+}
+
+int
+mpfr_sub_si (mpfr_ptr y, mpfr_srcptr x, long int u, mpfr_rnd_t rnd_mode)
+{
+ if (u >= 0)
+ return mpfr_sub_ui (y, x, u, rnd_mode);
+ else
+ return mpfr_add_ui (y, x, -u, rnd_mode);
+}
+
+int
+mpfr_si_sub (mpfr_ptr y, long int u, mpfr_srcptr x, mpfr_rnd_t rnd_mode)
+{
+ if (u >= 0)
+ return mpfr_ui_sub (y, u, x, rnd_mode);
+ else
+ {
+ int res = -mpfr_add_ui (y, x, -u, MPFR_INVERT_RND (rnd_mode));
+ MPFR_CHANGE_SIGN (y);
+ return res;
+ }
+}
+