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Diffstat (limited to 'Build/source/libs/mpfr/mpfr-3.1.2/src/si_op.c')
-rw-r--r-- | Build/source/libs/mpfr/mpfr-3.1.2/src/si_op.c | 57 |
1 files changed, 57 insertions, 0 deletions
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 new file mode 100644 index 00000000000..bad4b856b73 --- /dev/null +++ b/Build/source/libs/mpfr/mpfr-3.1.2/src/si_op.c @@ -0,0 +1,57 @@ +/* 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; + } +} + |